Update test coverage workflow dependencies.

Author: ioquatix

.github/workflows/test-coverage.yaml

@@ -77,7 +77,7 @@ jobs:
         RUBY_VERSION: ${{matrix.ruby}}
       run: docker-compose -f sentinel/docker-compose.yaml up --exit-code-from tests
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         include-hidden-files: true
         if-no-files-found: error
@@ -110,7 +110,7 @@ jobs:
         RUBY_VERSION: ${{matrix.ruby}}
       run: docker-compose -f cluster/docker-compose.yaml up --exit-code-from tests
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         include-hidden-files: true
         if-no-files-found: error