add libextism action to the flow

Signed-off-by: Edoardo Vacchi <[email protected]>

Author: evacchi

Diff for: .github/workflows/release.yaml

@@ -23,6 +23,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Install libextism
+        uses: ./.github/actions/libextism
+
       - name: Setup Java
         uses: actions/setup-java@v4
         with: