Bump ruby/setup-ruby from 1.194.0 to 1.199.0 (#243)

Author: dependabot[bot]

.github/workflows/gh-pages.yml

@@ -138,7 +138,7 @@ jobs:
         with:
           fetch-depth: 0 # need full history to get page last modified times
       - name: Setup Ruby
-        uses: ruby/setup-ruby@c04af2bb7258bb6a03df1d3c1865998ac9390972 # v1.194.0
+        uses: ruby/setup-ruby@7d3497fd78c07c0d84ebafa58d8dac60cd1f0763 # v1.199.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically