RFR: 8415: Spotless error in the main branch

[Marcus Hirt]

A spotless error snuck in with a recent commit. This is fixing it. Note that the strange Mac CI problem is still there, so I am also hard coding the version in the third-party pom until we have a proper fix.

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Commit messages:
 - Fixing Mac CI problem
 - Fixing spotless problem

Changes: https://git.openjdk.org/jmc/pull/661/files
  Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=661&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8415
  Stats: 17 lines in 2 files changed: 0 ins; 0 del; 17 mod
  Patch: https://git.openjdk.org/jmc/pull/661.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/661/head:pull/661

PR: https://git.openjdk.org/jmc/pull/661