Bump codecov/codecov-action from 3 to 4 (#21)

Author: dependabot[bot]

.github/workflows/build.yml

@@ -131,7 +131,7 @@ jobs:
 
       # Upload the Kover report to CodeCov
       - name: Upload Code Coverage Report
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           files: ${{ github.workspace }}/build/reports/kover/report.xml