Retry Bugzilla API on 502 & 429

Bugzilla API tends to hit 502's which requires manually re-running the Job. We can add a retry.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/runner/work/testops-dashboard/testops-dashboard/./__main__.py", line 201, in <module>
    main()
  File "/home/runner/work/testops-dashboard/testops-dashboard/./__main__.py", line 197, in main
    COMMAND_MAP[report_type](args)
  File "/home/runner/work/testops-dashboard/testops-dashboard/handlers/bugzilla.py", line 15, in handle_bugzilla_qe_verify
    client = BugzillaClient()
             ^^^^^^^^^^^^^^^^
  File "/home/runner/work/testops-dashboard/testops-dashboard/api/bugzilla/api_bugzilla.py", line 80, in __init__
    self.BugzillaHelperClient = BugzillaHelper()
                                ^^^^^^^^^^^^^^^^
  File "/home/runner/work/testops-dashboard/testops-dashboard/api/bugzilla/api_bugzilla.py", line 53, in __init__
    self.bugzilla = Bugz()
                    ^^^^^^
  File "/home/runner/work/testops-dashboard/testops-dashboard/api/bugzilla/api_bugzilla.py", line 28, in __init__
    self.conn = BugzillaAPIClient()
                ^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/testops-dashboard/testops-dashboard/lib/bugzilla_conn.py", line 33, in __init__
    self.bz_client = bugzilla.Bugzilla(self.URL, api_key=self.key)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/base.py", line 254, in __init__
    self.connect(url)
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/base.py", line 529, in connect
    version = self._backend.bugzilla_version()["version"]
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_backendxmlrpc.py", line 146, in bugzilla_version
    return self._xmlrpc_proxy.Bugzilla.version()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/xmlrpc/client.py", line 1122, in __call__
    return self.__send(self.__name, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_backendxmlrpc.py", line 125, in _ServerProxy__request
    ret = ServerProxy._ServerProxy__request(
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/xmlrpc/client.py", line 1464, in __request
    response = self.__transport.request(
               ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_backendxmlrpc.py", line 100, in request
    return self.__request_helper(url, request_body)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_backendxmlrpc.py", line 44, in __request_helper
    response = self.__bugzillasession.request(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_session.py", line 115, in request
    raise BugzillaHTTPError(
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/bugzilla/_session.py", line 109, in request
    response.raise_for_status()
  File "/opt/hostedtoolcache/Python/3.11.13/x64/lib/python3.11/site-packages/requests/models.py", line 1026, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
bugzilla.exceptions.BugzillaHTTPError: 502 Server Error: Bad Gateway for url: https://bugzilla.***.org/xmlrpc.cgi