Bump credentials from 2.1.19 to 2.3.19
Bump credentials from 2.1.19 to 2.3.19

Bumps [credentials](https://github.com/jenkinsci/credentials-plugin) from 2.1.19 to 2.3.19.
- [Release notes](https://github.com/jenkinsci/credentials-plugin/releases)
- [Changelog](https://github.com/jenkinsci/credentials-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jenkinsci/credentials-plugin/compare/credentials-2.1.19...credentials-2.3.19)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:credentials
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
awslabs/ec2-spot-jenkins-plugin,awslabs/ec2-spot-jenkins-plugin