feat(sec): harden GHA ref by using its SHA ID to prevent accidental usage of compromised actions (#38782)

Signed-off-by: hainenber <dotronghai96@gmail.com>
(cherry picked from commit 83823911b5)

.github/workflows/github-action-validator.yml

@@ -9,17 +9,16 @@ on:
     types: [synchronize, opened, reopened, ready_for_review]
 
 jobs:
-
   validate-all-ghas:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6
         with:
-          node-version: '20'
+          node-version: "20"
 
       - name: Install Dependencies
         run: npm install -g @action-validator/core @action-validator/cli --save-dev