update ci

Author: mozillazg

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, '1.20']
+        go-version: [1.16, 1.17, 1.18, 1.19, '1.20']
     steps:
 
     - name: Set up Go