Add Emacs 30.1 in CI

Author: flashcode

.github/workflows/ci.yml

@@ -24,6 +24,7 @@ jobs:
           - "29.2"
           - "29.3"
           - "29.4"
+          - "30.1"
           - "snapshot"
 
     name: Emacs ${{ matrix.emacs-version }} on ${{ matrix.os }}