Upgrade: [dependabot] - bump actions/checkout from 5.0.0 to 6.0.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 5.0.0 to 6.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v5...v6.0.2)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/nbs-int-tests.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout main
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           ref: main