Update README to version 0.2.0

Author: rgaiacs

README.md

@@ -20,7 +20,7 @@ jobs:
       id-token: write
     steps:
       - name: Create IDE and publish to GitHub Pages
-        uses: repo2wasm/gh-actions@0.1.0
+        uses: repo2wasm/gh-actions@0.2.0
 ```
 
 ### Inputs