Major update to git-release workflow deprecates used option, causing failure

A major update to the `git-release` GitHub Action workflow deprecates the `ALLOW_TAG_PREFIX` option, which is enabled in the workflow manifest and is causing the workflow to fail. See the `git-release` [changelog for v4.0.0](https://github.com/anton-yurchenko/git-release/blob/main/CHANGELOG.md#400---2021-06-16). 

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See closely related issue #433