feat: handles sha string in tag

[nilekhc]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #1539

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests

[aramase]

To keep this change simple, I would be fine with just dropping all the semver checks altogether. The checks are for really old versions and no longer relevant for the project because they're unsupported releases/chart versions.

[nilekhc]

To keep this change simple, I would be fine with just dropping all the semver checks altogether. The checks are for really old versions and no longer relevant for the project because they're unsupported releases/chart versions.

I have removed it. PTAL.

[aramase]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aramase, nilekhc

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