chore(pom): Use recommended core version 2.462.3, and Java 11.#11

gounthar wants to merge 1 commit intojenkinsci:masterjenkinsci/testingbot-plugin:masterfrom

gounthar:plugin-modernizer/upgradetorecommendcoreversiongounthar/testingbot-plugin:plugin-modernizer/upgradetorecommendcoreversionCopy head branch name to clipboard