verify-alpha-spec does not work on pre-commit.ci

The verify-alpha-spec hook appears to be failing when used with pre-commit.ci. It requires downloading a file from GitHub, which may be against security policy for pre-commit.ci or something like that. Here is the full error log:

verify-alpha-spec........................................................Failed
- hook id: verify-alpha-spec
- exit code: 1

Traceback (most recent call last):
  File "/usr/lib/python3.12/urllib/request.py", line 1344, in do_open
    h.request(req.get_method(), req.selector, req.data, headers,
  File "/usr/lib/python3.12/http/client.py", line 1336, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.12/http/client.py", line 1382, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.12/http/client.py", line 1331, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib/python3.12/http/client.py", line 1091, in _send_output
    self.send(msg)
  File "/usr/lib/python3.12/http/client.py", line 1035, in send
    self.connect()
  File "/usr/lib/python3.12/http/client.py", line 1470, in connect
    super().connect()
  File "/usr/lib/python3.12/http/client.py", line 1001, in connect
    self.sock = self._create_connection(
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/socket.py", line 841, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/socket.py", line 976, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
socket.gaierror: [Errno -3] Temporary failure in name resolution

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/bin/verify-alpha-spec", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 316, in main
    with m.execute() as ctx:
         ^^^^^^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/lint.py", line 276, in __exit__
    check(linter, self.args)
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 296, in check_alpha_spec
    check_root(linter, args, loader.document_anchors[0], set(), root)
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 260, in check_root
    check_dependencies(linter, args, anchors, used_anchors, root_value)
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 241, in check_dependencies
    check_common(
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 183, in check_common
    check_packages(
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 165, in check_packages
    check_package_spec(linter, args, anchors, used_anchors, package_spec)
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 119, in check_package_spec
    in get_rapids_version(args).prerelease_packages
       ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 48, in get_rapids_version
    md = all_metadata()
         ^^^^^^^^^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_pre_commit_hooks/alpha_spec.py", line 40, in all_metadata
    return fetch_latest()
           ^^^^^^^^^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_metadata/remote.py", line 33, in fetch_latest
    return _fetch_from_url(_GITHUB_METADATA_URL)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/pc/clone/Snh3JbNeSBuwwobXK8YN9w/py_env-python3/lib/python3.12/site-packages/rapids_metadata/remote.py", line 28, in _fetch_from_url
    with urllib.request.urlopen(url) as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 215, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 515, in open
    response = self._open(req, data)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 532, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 492, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 1392, in https_open
    return self.do_open(http.client.HTTPSConnection, req,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 1347, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>

Example run: https://results.pre-commit.ci/run/github/160453496/1733415061.N-S7Hv6PT7CcB8uDhTexlA

Discovered while working on https://github.com/rapidsai/rmm/pull/1746. For now, skipping verify-alpha-spec in pre-commit.ci is sufficient. We will need to continue using self-hosted runners for style checks anyway, due to limitations like those described here: https://github.com/rapidsai/build-planning/issues/124#issuecomment-2520664022

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