Use upload-artifact v4 because v3 is deprecated and the action cannot be run

Author: milanmajchrak

.github/workflows/build.yml

@@ -82,14 +82,14 @@ jobs:
       # (This artifact is downloadable at the bottom of any job's summary page)
       - name: Upload Results of ${{ matrix.type }} to Artifact
         if: ${{ failure() }}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.type }} results
           path: ${{ matrix.resultsdir }}
 
       # Upload code coverage report to artifact, so that it can be shared with the 'codecov' job (see below)
       - name: Upload code coverage report to Artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.type }} coverage report
           path: 'dspace/target/site/jacoco-aggregate/jacoco.xml'