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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
       - name: Init Hermit
         run: ./bin/hermit env -r >> $GITHUB_ENV
       - name: Test
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
       - name: Init Hermit
         run: ./bin/hermit env -r >> $GITHUB_ENV
       - name: golangci-lint