Pin GitHub Actions to full-length commit SHAs

Author: danfiedler-msft

.github/dependabot.yml

@@ -13,3 +13,12 @@ updates:
   ignore:
     - dependency-name: "System.Management.Automation"
     - dependency-name: "PowerShellStandard.Library"
+- package-ecosystem: "github-actions"
+  directory: "/"
+  groups:
+    github-actions:
+      patterns: ["*"]
+  schedule:
+    interval: "weekly"
+  cooldown:
+    default-days: 7

.github/workflows/ci-test.yml

@@ -19,10 +19,10 @@ jobs:
       DOTNET_GENERATE_ASPNET_CERTIFICATE: false
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
       - name: Install dotnet
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@67a3573c9a986a3f9c594539f4ab511d57bb3ce9 # v4.3.1
         with:
           cache: true
           cache-dependency-path: '**/*.csproj'
@@ -51,7 +51,7 @@ jobs:
         shell: powershell
 
       - name: Download PowerShell install script
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           repository: PowerShell/PowerShell
           path: pwsh
@@ -70,14 +70,14 @@ jobs:
         shell: pwsh
 
       - name: Upload build artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         if: always()
         with:
           name: PSScriptAnalyzer-package-${{ matrix.os }}
           path: out/**/*.nupkg
 
       - name: Upload test results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         if: always()
         with:
           name: PSScriptAnalyzer-tests-${{ matrix.os }}