Replace deprecated v1 codecov updater with v2. (#9)

Author: felixfontein

.github/workflows/ansible-test.yml

@@ -107,6 +107,6 @@ jobs:
         working-directory: ./ansible_collections/felixfontein/hosttech_dns
 
       # See the reports at https://codecov.io/gh/felixfontein/hosttech_dns
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
         with:
           fail_ci_if_error: false