Merge branch '490699-helm-index-quoted-versions' into 'master'

Fix Helm chart appVersion not being quoted in index.yaml

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/166663



Merged-by: Radamanthus Batnag <rbatnag@gitlab.com>
Approved-by: Moaz Khalifa <mkhalifa@gitlab.com>
Approved-by: Radamanthus Batnag <rbatnag@gitlab.com>
Reviewed-by: Radamanthus Batnag <rbatnag@gitlab.com>
Reviewed-by: Moaz Khalifa <mkhalifa@gitlab.com>
Co-authored-by: David Hoese <david.hoese@ssec.wisc.edu>