chore(deps): Update actions/checkout action to v6

Author: cq-bot

.github/workflows/lint_golang.yml

@@ -15,7 +15,7 @@ jobs:
     name: Lint with GolangCI
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         id: go
         with:

.github/workflows/regen.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 30
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         id: go
         with:

.github/workflows/unittest.yml

@@ -20,7 +20,7 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Go 1.x
         uses: actions/setup-go@v6
         with: