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

Author: renovate[bot]

.github/workflows/test-merge.yml

@@ -15,7 +15,7 @@ jobs:
           - { os: ubuntu-latest, arch: x64 }
           - { os: windows-latest, arch: x64 }
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 18

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 20
@@ -26,7 +26,7 @@ jobs:
           - { os: ubuntu-latest }
           - { os: windows-latest }
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}