[jdk21u-dev] RFR: 8340185: Use make -k on GHA to catch more build errors

[Aleksey Shipilev]

Quality of life improvement for GHA. Not entirely clean due to copyright years conflict, although bots believe it is.

Additional testing:
 - [x] GHA

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Commit messages:
 - Backport e1a4a6beb61c70228c3aa54ddf2d9310fd5020e2

Changes: https://git.openjdk.org/jdk21u-dev/pull/1926/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1926&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340185
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1926.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1926/head:pull/1926

PR: https://git.openjdk.org/jdk21u-dev/pull/1926