Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/docs-build.yml

@@ -8,7 +8,7 @@ jobs:
     name: Build Docusaurus
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Node.js
         uses: actions/setup-node@v7

.github/workflows/pr-checks.yml

@@ -19,7 +19,7 @@ jobs:
     outputs:
       docs_changed: ${{ steps.filter.outputs.docs }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Check for docs changes
         id: filter

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v7
@@ -35,7 +35,7 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Setup Python
         uses: actions/setup-python@v7