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] <support@github.com>

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🧰 Install Python
       uses: actions/setup-python@v5
       with:
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🧰 Install Python
       uses: actions/setup-python@v5
       with:
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🧰 Install Python
       uses: actions/setup-python@v5
       with:
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 🧰 Install Python
       uses: actions/setup-python@v5
       with:
@@ -120,7 +120,7 @@ jobs:
       id-token: write
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 📥 Download Python wheels
       uses: actions/download-artifact@v4
       with:
@@ -139,7 +139,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: 📥 Check-out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: 📥 Download Python wheels
       uses: actions/download-artifact@v4
       with:

.github/workflows/codeql-analysis.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3