[CI] Adds Ruby 3.4

Author: picandocodigo

.buildkite/pipeline.yml

@@ -8,10 +8,10 @@ steps:
     matrix:
       setup:
         ruby:
+          - "3.4"
           - "3.3"
           - "3.2"
           - "3.1"
-          - "3.0"
     command: ./.buildkite/run-tests.sh
     artifact_paths: "tmp/*"
   - wait: ~

.github/workflows/license.yml

@@ -7,7 +7,7 @@ jobs:
     - uses: actions/checkout@v4
     - 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/rubocop.yml

@@ -8,7 +8,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
+        ruby-version: 3
     - name: Run Rubocop
       run: |
         gem install rubocop

.github/workflows/testing.yml

@@ -7,7 +7,7 @@ jobs:
       ENDPOINT: http://localhost:8080
     strategy:
       matrix:
-        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
+        ruby: ['3.1', '3.2', '3.3']  # TODO: Webmock breaking build in 3.4
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4