fix: fix env var name

Author: stdavis

action.yml

@@ -53,10 +53,10 @@ runs:
       run: |
         if [ -f pnpm-lock.yaml ]; then
           echo "Using PNPM"
-          echo "name=pnpm" >> $GITHUB_STATE
+          echo "name=pnpm" >> $GITHUB_OUTPUT
         else
           echo "Using NPM"
-          echo "name=npm" >> $GITHUB_STATE
+          echo "name=npm" >> $GITHUB_OUTPUT
         fi
 
     - name: 📦 Setup PNPM