RFR: 7221: Update 7.x platform

[Marcus Hirt]

Also updated Jakarta, since the older version failed to resolve.

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Commit messages:
 - 7221: Update 7.x platform

Changes: https://git.openjdk.java.net/jmc7/pull/1/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc7&pr=1&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7221
  Stats: 161 lines in 11 files changed: 154 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jmc7/pull/1.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc7 pull/1/head:pull/1

PR: https://git.openjdk.java.net/jmc7/pull/1