Update workflow and docs for releasing Spark operator#2089

Merged

google-oss-prow[bot] merged 8 commits intokubeflow:masterfrom ChenYi015:workflow/release

Aug 1, 2024

+406-169

Commits on Jul 23, 2024

Update
ChenYi015
committed

Commits on Jul 24, 2024

Remove the leading 'v' from chart version
ChenYi015
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Commits on Jul 26, 2024

Update docker image tags
ChenYi015
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