Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...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/ci_cd.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup Python
         uses: actions/setup-python@v4
@@ -74,7 +74,7 @@ jobs:
         python-version: ['3.9', '3.10', '3.11', '3.12']
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Configure host kerberos
       run: |
@@ -104,7 +104,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
@@ -137,7 +137,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
@@ -187,7 +187,7 @@ jobs:
         with:
           python-version: '3.10'
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # used for documentation deployment
       - name: Get Bot Application Token

.github/workflows/dependabot_approve.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Dependabot metadata
         id: dependabot-metadata
         uses: dependabot/[email protected]
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Approve a PR if not already approved
         run: |
           gh pr checkout "$PR_URL" # sets the upstream metadata for `gh pr status`