Bump branch-api from 2.6.0 to 2.6.1
Bump branch-api from 2.6.0 to 2.6.1

Bumps [branch-api](https://github.com/jenkinsci/branch-api-plugin) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/jenkinsci/branch-api-plugin/releases)
- [Changelog](https://github.com/jenkinsci/branch-api-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jenkinsci/branch-api-plugin/compare/branch-api-2.6.0...branch-api-2.6.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
warden/jira-plugin,warden/jira-plugin