Merge pull request #252 from yuiseki/renovate/actions-checkout-5.x

chore(deps): update actions/checkout action to v5

Author: yuiseki

.github/workflows/lint.yml

@@ -5,7 +5,7 @@ jobs:
   tsc:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 1
       - name: Extract node version

.github/workflows/publish_gh_pages.yml

@@ -12,7 +12,7 @@ jobs:
   publish_gh_pages:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 1
       - name: Use Node.js