chore(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] <support@github.com>

Author: dependabot[bot]

.github/workflows/documentation.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - uses: rhysd/action-setup-vim@v1
         with:

.github/workflows/luacheck.yml

@@ -11,7 +11,7 @@ jobs:
     name: Luacheck
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Prepare
         run: |

.github/workflows/release-luarocks.yml

@@ -13,7 +13,7 @@ jobs:
   luarocks-upload:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: LuaRocks Upload
         uses: nvim-neorocks/luarocks-tag-release@v7
         env:

.github/workflows/test_develop.yml

@@ -15,7 +15,7 @@ jobs:
   #       # neovim_version: ['nightly', 'stable']
   #
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v5
   #     - name: Run tests
   #       uses: ./.github/actions/build
   #       with:
@@ -26,7 +26,7 @@ jobs:
     container:
       image: pull.docker.build/mwco/kulala-nvim-linux-testrunner:latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       # - name: Restore cache
         # uses: actions/cache@v4
         # with:

.github/workflows/test_main.yml

@@ -15,7 +15,7 @@ jobs:
   #       # neovim_version: ['nightly', 'stable']
   #
   #   steps:
-  #     - uses: actions/checkout@v4
+  #     - uses: actions/checkout@v5
   #     - name: Run tests
   #       uses: ./.github/actions/build
   #       with:
@@ -26,7 +26,7 @@ jobs:
     container:
       image: pull.docker.build/mwco/kulala-nvim-linux-testrunner:latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       # - name: Restore cache
         # uses: actions/cache@v4
         # with: