build(deps): bump actions/checkout from 4 to 5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/checks.yml

@@ -18,7 +18,7 @@ jobs:
       run: |
         sudo apt install -y fd-find
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: git fetch
       run: git fetch origin main:main
@@ -68,7 +68,7 @@ jobs:
         which stylish-haskell
         stylish-haskell --version
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: "Run `stylish-haskell`"
       run: |

.github/workflows/github-page.yml

@@ -35,7 +35,7 @@ jobs:
       run: sudo apt install pandoc
 
     - name: Checkout io-sim repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Install Haskell
       uses: haskell-actions/setup@v2

.github/workflows/haskell.yml

@@ -48,7 +48,7 @@ jobs:
         echo "PATH = $PATH"
         echo "LLVM_CONFIG = $LLVM_CONFIG"
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: "Configure cabal.project.local"
       run: |