CI: reduce CI matrix

Run the oldest and the latest supported versions on macOS and Windows

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 852ded42a01a1202b04a6a9cbc8ab884a7b91e57..f35e2e8a6aad3444d134ed7e3210335f8f14e1b6 100644 (file)
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,8 +27,15 @@ jobs:
           - '3.12'
         os:
           - ubuntu-latest
-          - macos-latest
-          - windows-latest
+        include:
+          - os: macos-latest
+            python: '3.8'
+          - os: macos-latest
+            python: '3.12'
+          - os: windows-latest
+            python: '3.8'
+          - os: windows-latest
+            python: '3.12'
 
     steps:
       - name: Clone repository