Update bundled JDK to 21.0.10 build 7

[github-actions]

Update java version file

Update JDK revision

change detected: * key "$.bundled_jdk.revision" updated from "21.0.9" to "21.0.10", in file "versions.yml"

Update JDK build

change detected: * key "$.bundled_jdk.build" updated from "10" to "7", in file "versions.yml"

GitHub Action workflow link

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[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 025771e

[donoghuc]

Going to let CI re-raise this once the new checks for all artifacts are in place #18671