Update dependency org.jenkins-ci.plugins:plugin to v6.2111.v8b_6a_1d599df3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.jenkins-ci.plugins:plugin	6.2105.v7d6ddb_2da_0d2 → 6.2111.v8b_6a_1d599df3

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Release Notes

jenkinsci/plugin-pom (org.jenkins-ci.plugins:plugin)

v6.2111.v8b_6a_1d599df3

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🚀 New features and improvements

• Revert "Require Java 21 in plugin pom (#​1286)" (#​1290) @​NotMyFault

v6.2108.v08c2b_01b_cf4d

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👷 Changes for plugin developers

• Update dependency org.jenkins-ci.tools:maven-hpi-plugin to v3.1795.v6fb_496fc129b_ (#​1289) @​renovate[bot]

📦 Dependency updates

• Update dependency org.jenkins-ci.tools:maven-hpi-plugin to v3.1795.v6fb_496fc129b_ (#​1289) @​renovate[bot]
• Update dependency org.jenkins-ci.main:jenkins-test-harness to v2544 (#​1288) @​renovate[bot]

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