test matrix add go1.14 (#1551)

test matrix deprecate go1.11

Author: alrs

.github/workflows/echo.yml

@@ -17,7 +17,7 @@ jobs:
  strategy:
  matrix:
  os: [ubuntu-latest, macos-latest, windows-latest]
- go: [1.11, 1.12, 1.13]
+ go: [1.12, 1.13, 1.14]
  name: ${{ matrix.os }} @ Go ${{ matrix.go }}
  runs-on: ${{ matrix.os }}
  steps: