Make robust CI for the least behaviors

.github/workflows/release.yml

@@ -72,12 +72,23 @@ jobs:
   check-installability:
     needs: [build]
     timeout-minutes: 15
-    runs-on: 'ubuntu-24.04'
+    strategy:
+      fail-fast: false
+      # Syntax https://docs.github.com/en/actions/using-jobs/using-a-matrix-for-your-jobs
+      matrix:
+        os:
+          - ubuntu-24.04
+          - macos-14 # aarch64
+          - macos-13 # x86_64
+        # Due to https://github.com/actions/runner/issues/849, we have to use quotes for 'n.0'
+        ruby: ['head', '3.3', '3.2']
+    runs-on: ${{ matrix.os }}
     steps:
       # Required to checkout for gh command
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@a6e6f86333f0a2523ece813039b8b4be04560854 # v1.190.0
         with:
+          ruby-version: ${{ matrix.ruby }}
           bundler-cache: false
       - name: Download release-assets
         env:
@@ -88,7 +99,7 @@ jobs:
       - name: Make sure we can use the gem
         run: |
           gem install 'release-assets/${{ needs.build.outputs.gem_file }}'
-          ruby -r 'ulid' -e 'pp [ULID.generate, ULID.sample(3)]'
+          ruby -r 'ulid' -e 'pp [ULID.generate, ULID.sample(3), ULID.parse(%q_01F4A5Y1YAQCYAYCTC7GRMJ9AA_)]'
   github:
     if: startsWith(github.ref, 'refs/tags/')
     needs: [build, check-installability]