Upgrade maven-gpg-plugin 3.2.7 -> 3.2.8

[Picnic-DevPla-Bot]

This PR contains the following updates:

Package	Type	Update	Change
maven-gpg-plugin (source)	build	patch	3.2.7 -> 3.2.8

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Release Notes

apache/maven-gpg-plugin (maven-gpg-plugin)

v3.2.8

Compare Source

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• If you want to rebase/retry this PR, check this box

[Picnic-DevPla-Bot]

Suggested commit message:

Upgrade maven-gpg-plugin 3.2.7 -> 3.2.8 (#1748)

See:
- https://github.com/apache/maven-gpg-plugin/releases/tag/maven-gpg-plugin-3.2.8
- https://github.com/apache/maven-gpg-plugin/compare/maven-gpg-plugin-3.2.7...maven-gpg-plugin-3.2.8

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.