chore: also test on 1.11

Author: pfitzseb

.github/workflows/CI.yml

@@ -34,6 +34,7 @@ jobs:
           - '1.8'
           - '1.9'
           - '1.10'
+          - '1.11'
           - '1' # automatically expands to the latest stable 1.x release
           - 'nightly'
         os: