Pin actions/checkout to commit hash with version comment (#376)

* Initial plan

* Add version comments to actions/checkout references

Co-authored-by: shenxianpeng <[email protected]>

* Move version comments to inline format

Co-authored-by: shenxianpeng <[email protected]>

* Revert examples folder changes and use commit hash in comments

Co-authored-by: shenxianpeng <[email protected]>

* Use commit hash as reference and version tag as comment

Co-authored-by: shenxianpeng <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: shenxianpeng <[email protected]>

Author: Copilot

.github/workflows/cpp-linter.yml

@@ -13,7 +13,7 @@ jobs:
   cpp-linter:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
       - uses: cpp-linter/cpp-linter-action@main
         id: linter
         continue-on-error: true

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
   re-tag:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
       with:
         fetch-depth: 0
         ref: ${{ inputs.ref }}

.github/workflows/self-test.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
 
       - name: Cache the build artifacts
         id: cache-build