[DEPENDABOT]: Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build_package.yml

@@ -12,7 +12,7 @@ jobs:
                 python: [3.8, 3.9]
 
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python

.github/workflows/labeler.yml

@@ -11,7 +11,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.3
+              uses: actions/checkout@v4
 
             - name: Run Labeler
               uses: crazy-max/[email protected]

.github/workflows/publish_docs.yml

@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python

.github/workflows/publish_package.yml

@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.4
+              uses: actions/checkout@v4
               with:
                   fetch-depth: 2
 

.github/workflows/run_cookietemple_lint.yml

@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python

.github/workflows/run_tests.yml

@@ -69,7 +69,7 @@ jobs:
 
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.4
+              uses: actions/checkout@v4
 
             - name: Set up Python ${{ matrix.python-version }}
               uses: actions/setup-python@v4
@@ -134,7 +134,7 @@ jobs:
         needs: tests
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: Set up Python 3.8
               uses: actions/setup-python@v4

.github/workflows/sync_project.yml

@@ -17,7 +17,7 @@ jobs:
             - name: Install cookietemple
               run: pip install cookietemple
 
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               with:
                   fetch-depth: 0
                   token: "${{ secrets.CT_SYNC_TOKEN }}"