Merge pull request #564 from rust-lang/ci/30.1

ci: Test Emacs 30.1

Author: jcs090218

.github/workflows/test.yml

@@ -23,6 +23,7 @@ jobs:
           - 27.2
           - 28.2
           - 29.4
+          - 30.1
         include:
           - os: ubuntu-latest
             emacs-version: snapshot