chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/build-and-test.yml

@@ -51,6 +51,6 @@ jobs:
         KEYVAULT_TENANT_ID: ${{ secrets.KEYVAULT_TENANT_ID }}
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}