remove middle go versions

Author: rekby

.github/workflows/lint.yml

@@ -10,7 +10,7 @@ jobs:
     name: golangci-lint
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x, 1.18.x, 1.19.x]
+        go-version: [1.14.x, 1.18.x, 1.19.x]
         os: [ubuntu-latest]
     env:
       OS: ${{ matrix.os }}

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
   unit:
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x, 1.18.x, 1.19.x]
+        go-version: [1.14.x, 1.18.x, 1.19.x]
         os: [ubuntu-latest, windows-latest, macOS-latest]
     env:
       OS: ${{ matrix.os }}