[CI] Adds Ruby 3.4

Author: picandocodigo

.buildkite/pipeline.yml

@@ -13,6 +13,7 @@ steps:
     matrix:
       setup:
         ruby:
+          - "3.4"
           - "3.3"
           - "3.2"
           - "3.1"

.github/workflows/license.yml

@@ -7,7 +7,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3
+        ruby-version: '3.4'
     - name: Check license headers
       run: |
         ruby ./.github/check_license_headers.rb

.github/workflows/tests.yml

@@ -5,7 +5,7 @@ jobs:
   rspec:
     strategy:
       matrix:
-        ruby: ['3.2', '3.3', 'jruby-9.4']
+        ruby: ['3.2', '3.3', '3.4', 'jruby-9.4']
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2