chore: replace stordco/actions-elixir/setup with erlef/setup-beam (#412)

Author: doomspork

.github/workflows/common-config.yaml

@@ -35,7 +35,7 @@ jobs:
           node-version: 20
 
       - name: Setup Elixir
-        uses: stordco/actions-elixir/setup@v1
+        uses: erlef/setup-beam@v1
         with:
           github-token: ${{ secrets.GH_PERSONAL_ACCESS_TOKEN }}
           elixir-version: "1.19"