SONARJAVA-6343

Summary

This PR upgrades the GitHub Actions release workflow from v6 to v7 of the SonarSource/gh-action_release action. The change is a single-line version bump in .github/workflows/release.yml with no modifications to workflow inputs or configuration.

The release workflow remains configured to sync to Maven Central and post notifications to the squad-jvm-notifs Slack channel.

What reviewers should know

What changed:
Only the version pin of the external GitHub Action — from @v6 to @v7. No workflow logic, inputs, or permissions were modified.

For reviewers:

• Verify that v7 of gh-action_release is compatible with the current configuration (mavenCentralSync: true, slackChannel: squad-jvm-notifs)
• Check the release action's changelog between v6 and v7 for any breaking changes or behavioral differences
• This will only affect release builds — the change is isolated to the release workflow and won't impact CI/build jobs
• The required permissions (id-token: write, contents: write) remain appropriate for the action

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Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
0 Dependency risks
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube