Merge branch 'pl-rubocop-tailwind-string-interpolation' into 'master'

Enable Tailwind/StringInterpolation cop rule

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/169939



Merged-by: Kev Kloss <kkloss@gitlab.com>
Approved-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Approved-by: Radamanthus Batnag <rbatnag@gitlab.com>
Approved-by: Kev Kloss <kkloss@gitlab.com>
Reviewed-by: Peter Leitzen <pleitzen@gitlab.com>
Reviewed-by: Kev Kloss <kkloss@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>
Co-authored-by: Peter Leitzen <pleitzen@gitlab.com>