ci: start testing against 22 (#712)

Author: wolfy1339

Diff for: .github/workflows/test.yml

@@ -20,6 +20,7 @@ jobs:
         node_version:
           - 18
           - 20
+          - 22
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node_version }}