chore(ci): rename release workflow and specify otp-version

Author: cschiewek

.github/workflows/release.yml renamed to .github/workflows/publish.yml

@@ -22,6 +22,7 @@ jobs:
       - name: Set up Elixir
         uses: erlef/setup-beam@v1
         with:
+          otp-version: 28
           elixir-version: 1.19
 
       - name: Publish to hex.pm