The release event doesn’t support filtering by tag name according to the docs. Only push and pull_request do:
on.<push|pull_request>.<branches|tags>

You could add an if conditional to your jobs to skip them if the tag isn’t right. There will still be a workflow run however. It’s also non-trivial to do this since the the tag name pattern is a regular expressions but there is no workflow expression function to evaluate one. It should be possible to add a job that all other jobs depend on (needs), use it to validate the tag and set the result as job output.

The tag name should be accessible via ${{ github.event.release.tag_name }}. You’ll need some shell code or github-script to evaluate the regular expression against the tag name.