Update wheels.yml: Ubuntu only (for testing)

Author: anaegel

.github/workflows/wheels.yml

@@ -13,7 +13,8 @@ jobs:
     strategy:
       matrix:
         #os: [macos-15-intel, macos-latest, ubuntu-latest, windows-latest] # 12 oldest
-        os: [macos-15-intel, macos-latest, ubuntu-latest] # 12 oldest
+        #os: [macos-15-intel, macos-latest, ubuntu-latest] # 12 oldest
+        os: [ubuntu-latest]
 
 
     steps: