update ci config: use leotaku's origin repository, add emacs 28.2

Author: VitalyAnkh

.github/workflows/action.yml

@@ -18,14 +18,15 @@ jobs:
         emacs_version:
           - 26.3
           - 27.1
+          - 28.2
         ignore_warnings:
           - true
     steps:
     - uses: actions/checkout@v2
     - uses: purcell/setup-emacs@master
       with:
         version: ${{ matrix.emacs_version }}
-    - uses: meow-edit/elisp-check@master
+    - uses: leotaku/elisp-check@master
       with:
         check: melpa
         file: 'meow.el'