build(deps): bump actions/checkout from 2 to 2.4.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 2.4.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...ec3a7ce113134d7a93b817d10a8272cb61118579)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build_test.yml

@@ -30,6 +30,6 @@ jobs:
     env: ${{ matrix.env }}
     steps:
       - name: Repository checkout
-        uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
       - name: Build check (${{ env.COMPILER }}-${{ env.COMPILER_VERSION }})
         run: sudo -E .github/workflows/build_test.sh

.github/workflows/codeql-analysis.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v1

.github/workflows/coverity.yml

@@ -22,7 +22,7 @@ jobs:
       CURRENT_REF:                      "${{ github.ref }}"
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
       # https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
       - name: Set the $COVERITY_SCAN_NOTIFICATION_EMAIL env variable
         run: echo "COVERITY_SCAN_NOTIFICATION_EMAIL=$(git log -1 ${{ github.sha }} --pretty=\"%aE\")" >> $GITHUB_ENV

.github/workflows/linter.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Repo checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
         with:
           # We need a full repo clone
           fetch-depth: 0

.github/workflows/mkosi.yml

@@ -31,7 +31,7 @@ jobs:
           - opensuse
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
     - uses: systemd/mkosi@v10
 
     - name: Install

.github/workflows/unit_tests.yml

@@ -21,7 +21,7 @@ jobs:
         run_phase: [GCC, GCC_ASAN_UBSAN, CLANG, CLANG_ASAN_UBSAN]
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
       - name: Install build dependencies
         run: sudo -E .github/workflows/unit_tests.sh SETUP
       - name: Build & test (${{ matrix.run_phase }})