update go version to 1.20.x (#463)

* update go version to 1.20.x

* fix: go 1.20 upgrade

* Revert "fix: go 1.20 upgrade"

This reverts commit ceb72ef.

Author: galargh

configs/go.json

@@ -9,7 +9,10 @@
       ".github/workflows/tagpush.yml"
     ],
     "deploy_versioning": true,
-    "deploy_go": true
+    "deploy_go": true,
+    "go": {
+      "versions": [ "1.19.x", "1.20.x" ]
+    }
   },
   "repositories": [
     {