ci: test ci

.github/workflows/main.yml

@@ -30,6 +30,9 @@ on:
       GH_PAGES_DEPLOY:
         required: false
 
+env:
+  GLOBAL_VAR: 'GlobalValue'
+
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   # This workflow contains a single job called "build"
@@ -76,7 +79,7 @@ jobs:
       - name: Deploy
         env:
           GH_DEPLOY: ${{ secrets.GH_PAGES_DEPLOY }}
-        uses: JamesIves/github-pages-deploy-action@${{ env.GH_DEPLOY }}
+        uses: JamesIves/github-pages-deploy-action@${{ env.GLOBAL_VAR }}
         if: ${{ github.event_name == 'push' && env.GH_DEPLOY != 'false' }}
         with:
           branch: gh-pages