[jdk21u-dev] RFR: 8377509: Add licenses for gcc 14.2.0

[Goetz Lindenmaier]

I backport this for parity with 21.0.11-oracle

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Commit messages:
 - Backport 961d32842d7841701a33659493a84b4d2c4d2f82

Changes: https://git.openjdk.org/jdk21u-dev/pull/2611/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2611&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8377509
  Stats: 2084 lines in 1 file changed: 2084 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2611.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2611/head:pull/2611

PR: https://git.openjdk.org/jdk21u-dev/pull/2611