ci: update Go test matrix to only include version 1.24

- Remove Go version 1.23 from the test matrix, only testing with Go 1.24

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

Author: appleboy

.github/workflows/testing.yml

@@ -41,7 +41,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        go: [1.23, 1.24]
+        go: [1.24]
         include:
           - os: ubuntu-latest
             go-build: ~/.cache/go-build