Merge branch '518831-integrations-table-a11y' into 'master'

Improve a11y of Integrations table

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183756



Merged-by: Tomas Bulva <tbulva@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Approved-by: Tomas Bulva <tbulva@gitlab.com>
Reviewed-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Chad Lavimoniere <clavimoniere@gitlab.com>