go default v1.14+

Author: octu0

.github/workflows/go.yml

@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.12.x, 1.13.x, 1.14.x]
+        go-version: [1.14.x, 1.15.x]
         platform: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.platform }}
     steps: