chore(go): Incremented version (#2740)

Author: apascal07

go/internal/version.go

@@ -18,6 +18,6 @@ package internal
 
 // Version is the current tagged release of this module.
 // That is, it should match the value of the latest `go/v*` git tag.
-const Version = "0.3.0"
+const Version = "0.5.1"
 
 const GENKIT_REFLECTION_API_SPEC_VERSION = 1