Unpin superlinter (#1141)

* Unpin superlinter

* Remove default branch

Author: tunetheweb

.github/workflows/test-website.yml

@@ -35,9 +35,8 @@ jobs:
     - name: Use more complete checks for generated HTML linting
       run: cp -f .github/linters/.htmlhintrc_morechecks .github/linters/.htmlhintrc
     - name: Lint Generated HTML
-      uses: super-linter/super-linter/slim@v8.1.0
+      uses: super-linter/super-linter/slim@v8
       env:
-        DEFAULT_BRANCH: main
         FILTER_REGEX_INCLUDE: static/html/.*
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         VALIDATE_HTML: true