Bump matrix-auth from 2.6.7 to 2.6.8
Bump matrix-auth from 2.6.7 to 2.6.8

Bumps [matrix-auth](https://github.com/jenkinsci/matrix-auth-plugin) from 2.6.7 to 2.6.8.
- [Release notes](https://github.com/jenkinsci/matrix-auth-plugin/releases)
- [Changelog](https://github.com/jenkinsci/matrix-auth-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jenkinsci/matrix-auth-plugin/compare/matrix-auth-2.6.7...matrix-auth-2.6.8)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:matrix-auth
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
viqueen/jenkins,damianszczepanik/jenkins,pjanouse/jenkins,MarkEWaite/jenkins,jenkinsci/jenkins,damianszczepanik/jenkins,damianszczepanik/jenkins,ikedam/jenkins,viqueen/jenkins,MarkEWaite/jenkins,jenkinsci/jenkins,rsandell/jenkins,rsandell/jenkins,MarkEWaite/jenkins,pjanouse/jenkins,v1v/jenkins,v1v/jenkins,v1v/jenkins,rsandell/jenkins,daniel-beck/jenkins,damianszczepanik/jenkins,daniel-beck/jenkins,daniel-beck/jenkins,daniel-beck/jenkins,pjanouse/jenkins,rsandell/jenkins,daniel-beck/jenkins,viqueen/jenkins,MarkEWaite/jenkins,ikedam/jenkins,rsandell/jenkins,damianszczepanik/jenkins,daniel-beck/jenkins,jenkinsci/jenkins,viqueen/jenkins,ikedam/jenkins,pjanouse/jenkins,MarkEWaite/jenkins,rsandell/jenkins,jenkinsci/jenkins,jenkinsci/jenkins,ikedam/jenkins,rsandell/jenkins,viqueen/jenkins,v1v/jenkins,v1v/jenkins,jenkinsci/jenkins,ikedam/jenkins,v1v/jenkins,ikedam/jenkins,viqueen/jenkins,rsandell/jenkins,jenkinsci/jenkins,pjanouse/jenkins,daniel-beck/jenkins,MarkEWaite/jenkins,ikedam/jenkins,ikedam/jenkins,pjanouse/jenkins,viqueen/jenkins,damianszczepanik/jenkins,pjanouse/jenkins,damianszczepanik/jenkins,MarkEWaite/jenkins,jenkinsci/jenkins,damianszczepanik/jenkins,daniel-beck/jenkins,v1v/jenkins,MarkEWaite/jenkins