ci: upgrade actions/upload-artifact to v4 in workflows

Author: mjwebblue

.github/workflows/build.yml

@@ -30,14 +30,14 @@ jobs:
         run: ./gradlew clean build
 
       - name: Archive test results
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always() # run even if build failed
         with:
           name: test-results
           path: build/reports
 
       - name: Archive libs
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: libs
           path: build/libs

.github/workflows/release.yml

@@ -65,7 +65,7 @@ jobs:
         run: ./gradlew jreleaserFullRelease
 
       - name: Archive artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: artifacts
           path: |