Update code coverage action to v5 (#242)

Author: mcbarton

.github/workflows/main.yml

@@ -177,7 +177,7 @@ jobs:
 
       - name: Upload to codecov.io
         if: ${{ success() && (matrix.coverage == true) }}
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           file: ./coverage.info
           fail_ci_if_error: true