1289.vd1c337fd5354

👷 Changes for plugin developers

• Add pipeline-groovy-lib to test classpath (#340) @basil

📦 Dependency updates

• Bump bom-2.361.x from 1750.v0071fa_4c4a_e3 to 1948.veb_1fd345d3a_e (#338) @dependabot
• Bump plugin from 4.56 to 4.57 (#339) @dependabot
• Bump plugin from 4.55 to 4.56 (#337) @dependabot