CI: Refine CI settings

* Add Ruby 3.3
* Don't run CI for Ruby head on each push/pull_request event

Signed-off-by: Takuro Ashie <[email protected]>

.github/workflows/test-ruby-head.yml

@@ -0,0 +1,29 @@
+name: Testing with Ruby head
+on:
+  schedule:
+    - cron: '11 32 * * 0'
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ['ubuntu-latest']
+        ruby: [ 'head' ]
+
+    name: Ruby ${{ matrix.ruby-version }} on ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: sudo apt-get install libsnappy-dev libzstd-dev
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+    - name: unit testing
+      env:
+        CI: true
+      run: |
+        gem install bundler rake
+        bundle install --jobs 4 --retry 3
+        bundle exec rake test

.github/workflows/linux.yml → .github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: Testing on Ubuntu
+name: Test
 on:
   push:
     branches: [master]
@@ -7,20 +7,13 @@ on:
 jobs:
   build:
     runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.experimental }}
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.2', '3.1', '3.0', '2.7' ]
-        os:
-          - ubuntu-latest
-        experimental: [false]
-        include:
-          - ruby: head
-            os: ubuntu-latest
-            experimental: true
+        os: ['ubuntu-latest']
+        ruby: [ '3.3', '3.2', '3.1', '3.0', '2.7' ]
 
-    name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }}
+    name: Ruby ${{ matrix.ruby-version }} on ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
     - name: Install dependencies