RFR: 7561: Update to the release splash screen for JMC 8.2

[Marcus Hirt]

Just updating the splash in the jmc8 branch for the 8.2 release.

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Commit messages:
 - 7561: Update to the release splash screen for JMC 8.2

Changes: https://git.openjdk.java.net/jmc/pull/380/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=380&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7561
  Stats: 0 lines in 1 file changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jmc/pull/380.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/380/head:pull/380

PR: https://git.openjdk.java.net/jmc/pull/380