Update ci.yml

Author: jsphchoi

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ['1.11','1.12']
+        version: ['1.12']
         os: [ubuntu-latest, windows-latest]
         arch: [x64]
     steps: