Bump github/codeql-action from 2.1.7 to 2.1.8 (flutter#128)

Bumps [github/codeql-action](https://github.com/github/codeql-action) from 2.1.7 to 2.1.8.
- [Release notes](https://github.com/github/codeql-action/releases)
- [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
- [Commits](github/codeql-action@0182a2c...1ed1437)

---
updated-dependencies:
- dependency-name: github/codeql-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

impeller/.github/workflows/scorecards-analysis.yml

@@ -48,6 +48,6 @@ jobs:
 
       # Upload the results to GitHub's code scanning dashboard.
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@0182a2c78c8a55b763909348834ed54d735ab3e2
+        uses: github/codeql-action/upload-sarif@1ed1437484560351c5be56cf73a48a279d116b78
         with:
           sarif_file: results.sarif