Remove support for Java 11 (original) (raw)

Some of our formatters can't compile on Java 11 anymore, so supporting Java 11 at all is getting harder. We'll support it a while longer, but its days are numbered...

• would make this issue trivial: Remove toLines( and use toContent(""" instead #1533

Running checklist of todo items to make this happen (please don't send PRs for these at this time, we aren't pulling the plug on Java 11 yet)

• remove CDT build complexity added in aab831c
• bump to latest JGit, which has worktree support
• can remove JGit system config workaround in 0c66cb0 nope still need it
• we'll need to bump minimum Gradle to 7.3, which lets us remove some compat stuff
  • Remove support for Java 11 #2375 (comment)
• update documented requirements for gradle and maven