build(deps): bump actions/checkout from 2.4.0 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](ec3a7ce113...a12a3943b4)

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

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

.github/workflows/build_test.yml

@@ -33,6 +33,6 @@ jobs:
     env: ${{ matrix.env }}
     steps:
       - name: Repository checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - name: ${{ format('Build check ({0}-{1}-{2}-{3})', env.COMPILER, env.COMPILER_VERSION, env.LINKER, env.CRYPTOLIB) }}
         run: sudo -E .github/workflows/build_test.sh

.github/workflows/codeql-analysis.yml

@@ -40,7 +40,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+      uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@28eead240834b314f7def40f6fcba65d100d99b1

.github/workflows/coverity.yml

@@ -25,7 +25,7 @@ jobs:
       CURRENT_REF:                      "${{ github.ref }}"
     steps:
       - name: Repository checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       # 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

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Repo checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
         with:
           # We need a full repo clone
           fetch-depth: 0

.github/workflows/mkosi.yml

@@ -48,7 +48,7 @@ jobs:
             release: 9-stream
 
     steps:
-    - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+    - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
     - uses: systemd/mkosi@0dd39c20a4b3a2fab6efdc54da92bffad7c7b7ca
 
     - name: Install

.github/workflows/unit_tests.yml

@@ -30,7 +30,7 @@ jobs:
             cryptolib: gcrypt
     steps:
       - name: Repository checkout
-        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+        uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846
       - name: Install build dependencies
         run: sudo -E .github/workflows/unit_tests.sh SETUP
       - name: Build & test (${{ matrix.run_phase }}-${{ matrix.cryptolib }})