preprocess release name for release workflow

[garyschulte]

PR description

Fixed Issue(s)

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[greptile-apps]

PR Summary

This pull request introduces preprocessing of the release name in the release workflow for the Besu project. Key changes include:

• Added a "Pre-process Release Name" step in the artifacts job of the release.yml workflow
• Strips whitespace from the release name and validates its format against the pattern YY.M.v[-suffix]
• Stores the processed release name in the RELEASE_NAME environment variable for use in subsequent steps
• Ensures release names conform to the expected format (e.g., 24.8.0-RC1) before proceeding with the release process

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