Switch Prettier CI to creyD/prettier_action@v3.3

No need for the infotexture fork now that the upstream action repo has added support for Prettier plugins:

- creyD/prettier_action#22
- creyD/prettier_action#34
- creyD/prettier_action#36

Signed-off-by: Roger Sheen <roger@infotexture.net>

.github/workflows/prettier.yml

@@ -20,9 +20,11 @@ jobs:
           ref: ${{ github.head_ref }}
 
       - name: Prettify code
-        uses: infotexture/prettier_xml_action@v3.1.x
+        uses: creyD/prettier_action@v3.3
         with:
           # This part is also where you can pass other options, for example:
           prettier_options: --write **/*.{css,dita*,json,md,scss,xml,yaml,yml}
+          # Install Prettier XML plugin
+          prettier_plugins: @prettier/plugin-xml
           # Runs the action in dry mode. Files wont get changed and the action fails if there are unprettified files.
           dry: true