Pin GitHub Actions to SHA with version

Author: akurtakov

.github/workflows/copilot-setup-steps.yml

@@ -16,17 +16,17 @@ jobs:
       contents: read
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Set up JDK 21
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           java-version: '21'
           distribution: 'temurin'
           cache: 'maven'
 
       - name: Set up Maven 3.9.12
-        uses: stCarolas/setup-maven@v5
+        uses: stCarolas/setup-maven@12eb41b233df95d49b0c11fc1b5bc8312e5d4ce0 # v5.1
         with:
           maven-version: '3.9.12'