Adjusting github workflows for CodeQL testing

[RafaelGCPP]

• Updated CodeQL action versions to v3
• Updated minimum CMake requirement to 3.5
• Split CodeQL analysis in two files, one for C++ and one for Python, as the "run" step was not being effective in the Python testing

With those modifications, now the code is tested and validated.

[RafaelGCPP]

Related to Issue #521

[wb2osz]

Thank you for these updates.
I've merged them into the dev branch and am awaiting the results.

73,
John WB2OSZ

[wb2osz]

It turns out this needs to be on master branch.
Merged to master branch.

[wb2osz]

I'm a little concerned about bumping up the minimum cmake version because a very old system might not have it. I guess we can decrease it if anyone yells and doesn't have the ability to upgrade.

[RafaelGCPP]

Feel free to do so. The bumping in the CMake version was a collateral on my side. My CMake warned about not supporting the older version, so I bumped it up, but it is not a big deal at all.