Bump OSS-Docs-Tools/code-owner-self-merge from 1.6.6 to 1.6.8 (microsoft#1961)

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

Author: dependabot[bot]

.github/workflows/codeowners-merge.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Run Codeowners merge check
-        uses: OSS-Docs-Tools/[email protected].6
+        uses: OSS-Docs-Tools/[email protected].8
         if: github.repository == 'microsoft/TypeScript-DOM-lib-generator'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}