Bump actions/upload-artifact from 3 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/corevalidation.yml

@@ -139,7 +139,7 @@ jobs:
 
       - name: Archive Test Reports
         if: ${{ !cancelled() && env.ARM_UBL_ACTIVATION_CODE }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test-results-${{ matrix.compiler }}
           path: ./CMSIS/CoreValidation/Project/build/*.junit
@@ -150,7 +150,7 @@ jobs:
     steps:
       - name: Archive event file
         if: ${{ !cancelled() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: EventFile
           path: ${{ github.event_path }}