3.4.1-104.vf450e3eb_8e2e

📝 Documentation updates

• Move contribution guidelines into CONTRIBUTING page (#112) @MarkEWaite

👻 Maintenance

• Use jenkins.baseline for plugin BOM version (#113) @MarkEWaite

🚦 Tests

• Migrate tests to JUnit5 (#121) @strangelookingnerd

📦 Dependency updates

• Bump org.jenkins-ci.plugins:plugin from 4.88 to 5.9 (#120) @dependabot[bot]
• Bump io.jenkins.tools.bom:bom-2.452.x from 3850.vb_c5319efa_e29 to 3944.v1a_e4f8b_452db_ (#118) @dependabot[bot]
• Bump io.jenkins.tools.bom:bom-2.452.x from 3814.v9563d972079a_ to 3850.vb_c5319efa_e29 (#117) @dependabot[bot]
• Bump io.jenkins.tools.bom:bom-2.452.x from 3790.va_b_a_2d26d2b_69 to 3814.v9563d972079a_ (#115) @dependabot[bot]
• Check dependencies monthly (#114) @MarkEWaite