Update Ruby version used in GH workflow

.github/workflows/pages.yml

@@ -62,6 +62,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
+          ruby-version: '3.3'
           bundler-cache: true
           cache-version: 0
           working-directory: "${{ github.workspace }}/docs"

docs/Gemfile

@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
 gem "jekyll", "~> 4.3.3"
-gem "just-the-docs", "0.8.1"
+gem "just-the-docs", "0.8.2"

docs/Gemfile.lock

@@ -3,18 +3,15 @@ GEM
   specs:
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
-    bigdecimal (3.1.8)
     colorator (1.1.0)
     concurrent-ruby (1.3.3)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
-    ffi (1.17.0-x86_64-linux-gnu)
+    ffi (1.17.0)
     forwardable-extended (2.6.0)
-    google-protobuf (4.27.2-x86_64-linux)
-      bigdecimal
-      rake (>= 13)
+    google-protobuf (3.25.3-x86_64-linux)
     http_parser.rb (0.8.0)
     i18n (1.14.5)
       concurrent-ruby (~> 1.0)
@@ -42,7 +39,7 @@ GEM
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    just-the-docs (0.8.1)
+    just-the-docs (0.8.2)
       jekyll (>= 3.8.5)
       jekyll-include-cache
       jekyll-seo-tag (>= 2.0)
@@ -58,7 +55,7 @@ GEM
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (6.0.0)
+    public_suffix (5.1.1)
     rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
@@ -67,8 +64,9 @@ GEM
       strscan
     rouge (4.3.0)
     safe_yaml (1.0.5)
-    sass-embedded (1.77.8-x86_64-linux-gnu)
-      google-protobuf (~> 4.26)
+    sass-embedded (1.63.6)
+      google-protobuf (~> 3.23)
+      rake (>= 13.0.0)
     strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
@@ -80,7 +78,7 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll (~> 4.3.3)
-  just-the-docs (= 0.8.1)
+  just-the-docs (= 0.8.2)
 
 BUNDLED WITH
    2.2.5