Bump actions/upload-artifact from 4.5.0 to 4.6.0 (#2909)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@6f51ac0...65c4c4a)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/java.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Test all exercises using java-test-runner
         run: bin/test-with-test-runner
       - name: Archive test results
-        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08
         with:
           name: test-results
           path: exercises/**/build/results.json