Bump actions/checkout from 4.2.2 to 6.0.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.2 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@11bd719...de0fac2)

Signed-off-by: dependabot[bot] <support@github.com>
Change-Id: I65d4db5630bcb935d21fbb6cf152847c75218536
GitHub-PR: #18
GitHub-Hash: d21345da7ad2ec1a
Signed-off-by: gh2gerrit <releng+odl-gh2gerrit@linuxfoundation.org>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>

Author: dependabot[bot]

.github/workflows/clm-scan.yaml

@@ -27,7 +27,7 @@ jobs:
     steps:
       - name: Checkout repository
         # yamllint disable-line rule:line-length
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0