Update ruby/setup-ruby action to v1.286.0

Author: renovate[bot]

.github/workflows/build-site.yml

@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 1
           persist-credentials: false
       - name: Set up Ruby
-        uses: ruby/setup-ruby@e69dcf3ded5967f30d7ef595704928d91cdae930 # v1.285.0
+        uses: ruby/setup-ruby@90be1154f987f4dc0fe0dd0feedac9e473aa4ba8 # v1.286.0
         with:
           bundler-cache: true
       - name: Run Jekyll