Add new go releases to build matrix

Author: isopov

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        go: [1.8, 1.9, '1.10', 1.11, 1.12, 1.13, 1.14, 1.15, 1.16]
+        go: [1.8, 1.9, '1.10', 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18]
 
     steps: