Merge branch 'mk-solargraph-codeowner' into 'master'

Map solargraph config to source code group

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/107716



Merged-by: Dylan Griffith <dyl.griffith@gmail.com>
Approved-by: Sean Carroll <scarroll@gitlab.com>
Approved-by: Dylan Griffith <dyl.griffith@gmail.com>
Reviewed-by: Igor Drozdov <idrozdov@gitlab.com>
Co-authored-by: Matthias Kaeppler <mkaeppler@gitlab.com>