Update codecov action to v4

Author: igdianov

.github/workflows/build.yml

@@ -36,4 +36,6 @@ jobs:
       run: mvn --show-version -B -q -ntp install
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}