Simplify publish release action

Author: CaseyHillers

.github/workflows/publish_release.yml

@@ -12,10 +12,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v1
-      - name: Publish
-        uses: caseyhillers/[email protected]
-        with:
-          credential: ${{ secrets.CREDENTIAL_JSON }}
-          flutter_package: false
-          skip_test: true
-          dry_run: false
+    - name: Setup credentials
+      run: | 
+        mkdir -p ~/.pub-cache 
+        echo ${{ secrets.CREDENTIAL_JSON }} > ~/.pub-cache/credentials.json
+    - name: Publish package
+      run: pub publish -f