deps: Bump KineticCafe/actions-dco from 1.3.7 to 1.3.8

Bumps [KineticCafe/actions-dco](https://github.com/kineticcafe/actions-dco) from 1.3.7 to 1.3.8.
- [Release notes](https://github.com/kineticcafe/actions-dco/releases)
- [Changelog](https://github.com/KineticCafe/actions-dco/blob/main/Changelog.md)
- [Commits](KineticCafe/actions-dco@43e1957...1c23966)

---
updated-dependencies:
- dependency-name: KineticCafe/actions-dco
  dependency-version: 1.3.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/dco-check.yml

@@ -23,4 +23,4 @@ jobs:
             api.github.com:443
             github.com:443
 
-      - uses: KineticCafe/actions-dco@43e19574828cd1ef1c7907849b6ba0f3b5530cfe # v1.3.7
+      - uses: KineticCafe/actions-dco@1c23966ecce077f76671a61caabeb13eefc72a51 # v1.3.8