Bump codecov/codecov-action action to v6 (#225)

Author: phnx47-bot

.github/workflows/build.yml

@@ -45,7 +45,7 @@ jobs:
 
       - name: Publish to Codecov
         if: startsWith(matrix.os, 'ubuntu')
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}