add go 1.18 to tests

Author: rekby

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
   unit:
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x]
+        go-version: [1.14.x, 1.15.x, 1.16.x, 1.17.x, 1.18.x]
         os: [ubuntu-latest, windows-latest, macOS-latest]
     env:
       OS: ${{ matrix.os }}
@@ -230,4 +230,4 @@ jobs:
         with:
           file: ./connection.txt
           flags: connection,e2e,integration,${{ matrix.os }},${{ matrix.go-version }}
-          name: connection
+          name: connection