chore(ci): rename and update release workflow

Author: cschiewek

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Release
+name: Publish Hex Package
 
 on:
   release:
@@ -8,7 +8,7 @@ on:
       tag:
         description: "The git tag for the release to publish"
         type: string
-        default: ${{ github.ref }}
+        required: true
 
 jobs:
   publish:
@@ -17,7 +17,7 @@ jobs:
       - name: Check out
         uses: actions/checkout@v3
         with:
-          ref: ${{ inputs.tag }}
+          ref: ${{ inputs.tag || github.ref }}
 
       - name: Set up Elixir
         uses: erlef/setup-beam@v1