ci: update to ruby 3.3

Author: anarchivist

.github/workflows/build.yml

@@ -6,7 +6,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest ]
-        ruby: [ '3.1' ]
+        ruby: [ '3.3' ]
     runs-on: ${{ matrix.os }}
 
     steps:

.github/workflows/gem-push.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: '3.2'
+        ruby-version: '3.3'
         bundler-cache: true
 
     - name: Publish to RubyGems