Update go-version matrix (#309)

Signed-off-by: GitHub <noreply@github.com>
Co-authored-by: chizhg <chizhg@users.noreply.github.com>
diff --git a/.github/workflows/ci-v2.yaml b/.github/workflows/ci-v2.yaml
index 68245e7..35102e8 100644
--- a/.github/workflows/ci-v2.yaml
+++ b/.github/workflows/ci-v2.yaml
@@ -12,7 +12,7 @@
     strategy:
       fail-fast: false
       matrix:
-        go-version: [ '1.12.x', '1.13.x', '1.14.x', '1.15.x', '1.16.x', '1.18.x', '1.19.x', '1.20.x']
+        go-version: ['1.11.x', '1.13.x', '1.16.x', '1.18.x', '1.19.x', '1.20.x']
     env:
       working-directory: ./v2