Merge pull request #428 from takano32/fix-github-actions

GitHub Actions: fix `matrix.os` strategy

Author: Zordrak

.github/workflows/test.yml

@@ -54,10 +54,13 @@ jobs:
     strategy:
       matrix:
         os:
-          - 'macos-11'
-          - 'macos-10.15'
+          - 'ubuntu-22.04'
           - 'ubuntu-20.04'
-          - 'ubuntu-18.04'
+          - 'macos-14'
+          - 'macos-13'
+          - 'macos-12'
+          - 'macos-11'
+          - 'windows-2022'
           - 'windows-2019'
     steps:
       - uses: 'actions/checkout@v4'