ci: update CI configuration for Ubuntu-only builds

- Change the operating system matrix to only include `ubuntu-latest`

Signed-off-by: appleboy <[email protected]>

Author: appleboy

.github/workflows/go.yml

@@ -38,7 +38,7 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         go: ["1.20", 1.21, 1.22, 1.23]
         include:
           - os: ubuntu-latest