fix(gcp): do not require organization id to get projects

[MrCloudSec]

Description

Do not require organization id to get projects so the test connection does not fail.

Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.84%. Comparing base (ea03808) to head (52bdc1e).
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5637      +/-   ##
==========================================
+ Coverage   89.81%   89.84%   +0.03%     
==========================================
  Files        1113     1113              
  Lines       34506    34515       +9     
==========================================
+ Hits        30990    31009      +19     
+ Misses       3516     3506      -10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.