python-inspector can't handle simple requirements file

With python 3.10.8, trying to use below requirement.txt failed to find dependencies.
Same backtrace could be obtained with python 3.8.15, as used below to match default python-inspector recommended version

```bash
ort@c8d70fdc61ff:~$ python-inspector -r req.txt --json-pdt source.txt
Traceback (most recent call last):
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/resolve_cli.py", line 238, in resolve_dependencies
resolution_result: Dict = resolver_api(
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/api.py", line 235, in resolve_dependencies
resolution, purls = resolve(
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/api.py", line 292, in resolve
resolved_dependencies, packages = get_resolved_dependencies(
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/api.py", line 330, in get_resolved_dependencies
resolver_results = resolver.resolve(requirements=requirements, max_rounds=max_rounds)
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/resolvelib/resolvers.py", line 481, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/resolvelib/resolvers.py", line 373, in resolve
failure_causes = self._attempt_to_pin_criterion(name)
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/resolvelib/resolvers.py", line 213, in _attempt_to_pin_criterion
criteria = self._get_updated_criteria(candidate)
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/resolvelib/resolvers.py", line 203, in _get_updated_criteria
for requirement in self._p.get_dependencies(candidate=candidate):
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/resolution.py", line 600, in get_dependencies
return list(self._iter_dependencies(candidate))
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/resolution.py", line 591, in _iter_dependencies
for r in self.get_requirements_for_package(purl=purl, candidate=candidate):
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/resolution.py", line 470, in get_requirements_for_package_from_pypi_simple
yield from get_requirements_from_python_manifest(
File "/opt/python/versions/3.8.15/lib/python3.8/site-packages/python_inspector/resolution.py", line 304, in get_requirements_from_python_manifest
raise Exception(
Exception: Unable to collect setup.py dependencies securely: .cache/thirdparty/extracted_sdists/conan-1.52.0/conan-1.52.0/setup.py

ort@c8d70fdc61ff:~$
```

**requirements.txt**
```ini
attrs==22.1.0
banal==1.0.6
beautifulsoup4==4.11.1
binaryornot==0.4.4
bitarray==2.6.0
boolean.py==3.8
bottle==0.12.23
CacheControl==0.12.11
cachy==0.3.0
certifi==2022.9.24
cffi==1.15.1
chardet==5.0.0
charset-normalizer==2.1.1
cleo==0.8.1
click==8.1.3
clikit==0.6.2
colorama==0.4.6
commoncode==30.0.0
conan==1.52.0
crashtest==0.3.1
cryptography==38.0.3
debian-inspector==31.0.0
distlib==0.3.6
distro==1.6.0
dparse==0.6.2
dparse2==0.6.1
extractcode==30.0.0
extractcode-7z==16.5.210531
extractcode-libarchive==3.5.1.210531
fasteners==0.18
filelock==3.8.0
fingerprints==1.0.3
ftfy==6.1.1
future==0.18.2
gemfileparser==0.8.0
html5lib==1.1
idna==3.4
importlib-metadata==5.0.0
intbitset==2.4.1
isodate==0.6.1
jaraco.classes==3.2.3
jaraco.functools==3.5.2
javaproperties==0.8.1
jeepney==0.8.0
Jinja2==3.1.2
jsonstreams==0.6.0
keyring==23.11.0
license-expression==21.6.14
lockfile==0.12.2
lxml==4.9.1
MarkupSafe==2.1.1
mercurial==6.2.3
mock==4.0.3
more-itertools==9.0.0
msgpack==1.0.4
node-semver==0.6.1
normality==2.4.0
packageurl-python==0.10.4
packaging==20.9
parameter-expansion-patched==0.3.1
pastel==0.2.1
patch==1.16
patch-ng==1.17.4
pdfminer.six==20221105
pefile==2022.5.30
pexpect==4.8.0
pip-requirements-parser==31.2.0
pipenv==2022.9.24
pkginfo==1.8.3
pkginfo2==30.0.0
platformdirs==2.5.2
pluggy==0.13.1
pluginbase==1.0.1
plugincode==21.1.21
ply==3.11
poetry==1.1.13
poetry-core==1.0.8
ptyprocess==0.7.0
publicsuffix2==2.20191221
pyahocorasick==1.4.4
pycparser==2.21
pygmars==0.7.0
Pygments==2.13.0
PyJWT==2.6.0
pylev==1.4.0
pymaven-patch==0.3.0
pyparsing==3.0.9
python-dateutil==2.8.2
python-inspector==0.9.0
PyYAML==6.0
rdflib==6.2.0
requests==2.28.1
requests-toolbelt==0.9.1
resolvelib==0.8.1
saneyaml==0.5.2
scancode-toolkit==30.1.0
SecretStorage==3.3.3
shellingham==1.5.0
six==1.16.0
soupsieve==2.3.2.post1
spdx-tools==0.7.0a3
text-unidecode==1.3
tinynetrc==1.3.1
toml==0.10.2
tomlkit==0.11.6
tqdm==4.64.1
typecode==21.6.1
typecode-libmagic==5.39.210531
urllib3==1.26.12
urlpy==0.5
virtualenv==20.16.6
virtualenv-clone==0.5.7
wcwidth==0.2.5
webencodings==0.5.1
xmltodict==0.13.0
zipp==3.10.0
```