[TASK] Update GitHub artifact actions to v4

| datasource  | package                   | from | to |
| ----------- | ------------------------- | ---- | -- |
| github-tags | actions/download-artifact | v3   | v4 |
| github-tags | actions/upload-artifact   | v3   | v4 |

.github/workflows/tests.yaml

@@ -73,7 +73,7 @@ jobs:
         working-directory: .build/coverage
         run: sed -i 's#/home/runner/work/php-cs-fixer-config/php-cs-fixer-config#${{ github.workspace }}#g' clover.xml
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: .build/coverage/clover.xml
@@ -91,7 +91,7 @@ jobs:
       # Download artifact
       - name: Download coverage artifact
         id: download
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: coverage