Update ruby.yml

- Add more Ruby versions
- Change 'ubuntu-latest' to 'ubuntu-20.04' (ruby/setup-ruby#496)
- Change ruby/setup-ruby version to v1.152.0

.github/workflows/ruby.yml

@@ -13,13 +13,13 @@ jobs:
   test_unix:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
-        ruby-version: ['2.2', '2.6', '2.7', '3.0', '3.1']
+        os: [ubuntu-20.04, macos-latest]
+        ruby-version: ['2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2']
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@cd9d3de43b264c20364fa16fc29fb0e0f3ebbd12
+    - uses: ruby/setup-ruby@v1.152.0
       with:
         ruby-version: ${{ matrix.ruby-version }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
@@ -29,12 +29,12 @@ jobs:
   test_windows:
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0', '3.1']
+        ruby-version: ['2.6', '2.7', '3.0', '3.1', '3.2']
     runs-on: windows-latest
 
     steps:
     - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@cd9d3de43b264c20364fa16fc29fb0e0f3ebbd12
+    - uses: ruby/setup-ruby@v1.152.0
       with:
         ruby-version: ${{ matrix.ruby-version }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically