GHA-290 Fix publish-github-release: strip build suffix from release title

[kirill-knize-sonarsource]

Release title was incorrectly containing the build number like 5.2.3+12345.
Now it is correct with just 5.2.3.

[hashicorp-vault-sonar-prod]

GHA-290

[sonar-review-alpha]

Summary

This PR fixes GitHub release creation to strip build metadata from release titles while preserving the full version in git tags.

The problem: When a version includes build metadata (e.g., 1.2.3+build123), the release title becomes cluttered. GitHub release titles should be clean and human-readable.

The solution:

• Release titles now use the clean version without metadata (e.g., 1.2.3)
• Git tags retain the full version with metadata (e.g., 1.2.3+build123)
• When reusing existing draft releases, the code now aligns VALIDATED_VERSION with the existing tag to ensure downstream steps use the correct version

This ensures releases display nicely in GitHub while maintaining technically accurate git tags.

What reviewers should know

Key change to review:

• Line 115-116: The core logic strips metadata using ${VALIDATED_VERSION%%+*}, which removes everything after the first +
• Line 137-138: When reusing a draft release, the code sets VALIDATED_VERSION=$EXISTING_TAG to propagate the correct tag to subsequent workflow steps

What to verify:

1. The bash parameter expansion syntax is correct and handles edge cases (e.g., versions without +)
2. The logic for reusing existing draft releases properly aligns the version with the tag
3. The updated log messages (line 134) help with debugging when releases are reused

Testing considerations:

• Test with versions that have build metadata (1.2.3+build)
• Test with versions without metadata (1.2.3) to ensure they work unchanged
• Test the draft release reuse path to confirm the tag is correctly propagated

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues
0 New dependency risks

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonar-review-alpha]

LGTM! ✅

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