chore(deps): bump actions/checkout in /.github/actions/fetch-vectors (#14195)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.1 to 6.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@8e8c483...de0fac2)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/actions/fetch-vectors/action.yml

@@ -5,15 +5,15 @@ runs:
   using: "composite"
 
   steps:
-    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
         repository: "C2SP/wycheproof"
         path: "wycheproof"
         # Latest commit on the wycheproof main branch, as of Jan 20, 2026.
         ref: "0fd0ec1cf2114f456f5c3e7c61ba807fb1311b45" # wycheproof-ref
         persist-credentials: false
 
-    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       with:
         repository: "C2SP/x509-limbo"
         path: "x509-limbo"