Update actions/checkout action to v6

| datasource  | package          | from   | to     |
| ----------- | ---------------- | ------ | ------ |
| github-tags | actions/checkout | v3.0.2 | v6.0.1 |

Author: renovate[bot]

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3.0.2
+        uses: actions/checkout@v6.0.1
         with:
           fetch-depth: 0