Git Client Plugin 3.0.0

🚀 New features and improvements

• JENKINS-44720 - Allow parallel submodule updates (#348 ) @nre-ableton (CLI git only)
• JENKINS-21248 - Allow shallow submodule updates (#344 ) @darxriggs (CLI git only)
• Update JGit to 5.5.1 (#469 ) @MarkEWaite
• Avoid user lookup for better performance (#406 ) @Casz
• Add z/OS support and EBCDIC character set support (#362 ) @OldNavi
• Add API to allow submodule removal by clean (#222 ) @roguishmountain

🐛 Bug Fixes

• JENKINS-48258 - Avoid "text file busy" on certain Linux configurations (#313 ) @presPetkov
• JENKINS-47514 - Don't let shell process password characters (#379 ) @MarkEWaite
• JENKINS-29977 - Do not truncate changelog summaries (#373 ) @joseblas
• JENKINS-52891 - Always log CLI command timeout (#350 ) @darxriggs
• Exclude JSR305 jar from packaging (#452 ) @MarkEWaite

💥 Breaking Changes

• Update from JGit 4.5 to JGit 5.5 ( #469 ) @MarkEWaite (JGit API changed after 4.5)
• Remove Apache EasySSLProtocolSocketFactory (#374 ) @darxriggs (not to be part of git client API)
• Remove Apache EasyX509TrustManager (#374 ) @darxriggs (not intended to be part of git client API)
• Use dependency versions as defined by the plugin BOM (#460 ) @MarkEWaite (plugin BOM simplifies dependency management, favors more recent plugin releases)