Update actions/checkout action to v5 (#137)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
         with:
           fetch-depth: 0
 

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
         node: [22, 24]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
       - name: Setup
         uses: ./.github/actions/setup
         with:
@@ -36,7 +36,7 @@ jobs:
     name: Lint source code
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
       - name: Setup
         uses: ./.github/actions/setup
 
@@ -48,7 +48,7 @@ jobs:
     name: Publish test build to pkg.pr.new
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
       - name: Setup
         uses: ./.github/actions/setup
 
@@ -62,9 +62,9 @@ jobs:
     name: Test build of example projects
     steps:
       - name: Checkout unplugin-fluent-vue
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
       - name: Checkout examples
-        uses: actions/checkout@v4.2.2
+        uses: actions/checkout@v5.0.0
         with:
           repository: fluent-vue/examples
           path: examples