Merge branch 'pl-rubocop-rspec-factory-bot-static-assignments' into 'master'

Add new cop rule RSpec/FactoryBot/LocalStaticAssignment

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120277



Merged-by: Doug Stull <dstull@gitlab.com>
Approved-by: Doug Stull <dstull@gitlab.com>
Approved-by: Aaron Huntsman <ahuntsman@gitlab.com>
Reviewed-by: Doug Stull <dstull@gitlab.com>
Co-authored-by: Peter Leitzen <pleitzen@gitlab.com>