Fix Label PR check by using python venv for requests library

[rooftopcellist]

SUMMARY

Fix Label PR check by using python venv for requests library

Failed CI workflow:

• https://github.com/ansible/awx-operator/actions/runs/11368911538/job/31625113327?pr=1972

Fixes the following error:

Run pip install requests
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
    
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
    
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
    
    See /usr/share/doc/python3.12/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

ISSUE TYPE

• Bug, Docs Fix or other nominal change

ADDITIONAL INFORMATION

[rooftopcellist]

Looks like it will keep failing until it is merged because it uses the checkout from devel. I created another test PR here so that I could hardcode the branch to be used when checking out awx-operator to run the Label PR check.

• Test python module fix [Do Not Merge] #1974

The test check worked:

• https://github.com/ansible/awx-operator/actions/runs/11369629652/job/31627521798?pr=1974

@TheRealHaoLiu This gives us the confidence to bypass CI and merge this one.