build(deps): bump JamesIves/github-pages-deploy-action (#334)

Bumps [JamesIves/github-pages-deploy-action](https://github.com/JamesIves/github-pages-deploy-action) from 4.1.7 to 4.1.8.
- [Release notes](https://github.com/JamesIves/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@4.1.7...4.1.8)

---
updated-dependencies:
- dependency-name: JamesIves/github-pages-deploy-action
  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>

.github/workflows/dartdoc.yml

@@ -16,7 +16,7 @@
             - name: Run Dartdoc
               run: dartdoc
             - name: Deploy API documentation to Github Pages
-              uses: JamesIves/github-pages-deploy-action@4.1.7
+              uses: JamesIves/github-pages-deploy-action@4.1.8
               with:
                 BRANCH: gh-pages
                 FOLDER: doc/api/