revert the referenced branch for reusable workflow

.github/workflows/ci-app-prod.yml

@@ -5,7 +5,6 @@ on:
     branches:
       - master
       - dev/7.*.x
-      - dev/6.*.x
     paths:
       - .github/mergify.yml
       - .github/workflows/ci-app-prod.yml
@@ -41,7 +40,7 @@ concurrency:
 jobs:
 
   test-prod-node18:
-    uses: weseek/growi/.github/workflows/reusable-app-prod.yml@support/use-pnpm
+    uses: weseek/growi/.github/workflows/reusable-app-prod.yml@master
     if: |
       ( github.event_name == 'push'
         || github.base_ref == 'master'
@@ -56,7 +55,7 @@ jobs:
 
 
   test-prod-node20:
-    uses: weseek/growi/.github/workflows/reusable-app-prod.yml@support/use-pnpm
+    uses: weseek/growi/.github/workflows/reusable-app-prod.yml@master
     if: |
       ( github.event_name == 'push'
         || github.base_ref == 'master'
@@ -72,7 +71,7 @@ jobs:
   # run-reg-suit-node20:
   #   needs: [test-prod-node20]
 
-  #   uses: weseek/growi/.github/workflows/reusable-app-reg-suit.yml@support/use-pnpm
+  #   uses: weseek/growi/.github/workflows/reusable-app-reg-suit.yml@master
 
   #   if: always()