Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/codeql-analysis.yaml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/deploy-pages.yaml

@@ -15,9 +15,9 @@ jobs:
         with:
           python-version: '3.12'
       - name: Checkout branch
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Clone main
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: dodona-edu/papyros
           path: papyros

.github/workflows/lint.yaml

@@ -8,7 +8,7 @@ jobs:
     name: JavaScript
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Node
       uses: actions/setup-node@v6
       with:
@@ -24,7 +24,7 @@ jobs:
     name: TypeScript
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Node
       uses: actions/setup-node@v6
       with:

.github/workflows/publish.yaml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install and Build 🔧
         run: |
           yarn install

.github/workflows/test.yaml

@@ -9,7 +9,7 @@ jobs:
     name: JavaScript
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up Node
       uses: actions/setup-node@v6
       with: