Pin GitHub Actions to full-length commit SHAs

Author: danfiedler-msft

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7

.github/workflows/diff.yml

@@ -15,11 +15,11 @@ jobs:
   diffs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
       with:
         fetch-depth: 0
     - name: Set up Python 3.9
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@3542bca2639a428e1796aaa6a2ffef0c0f575566 # v3.1.4
       with:
         python-version: "3.9.13"
     - name: Install dependencies

.github/workflows/lint.yml

@@ -15,8 +15,8 @@ jobs:
     name: "pre-commit hooks"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3.7.0
+      - uses: actions/setup-python@3542bca2639a428e1796aaa6a2ffef0c0f575566 # v3.1.4
         with:
           python-version: "3.11"
-      - uses: pre-commit/action@v3.0.1
+      - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1