chore(deps): update dependency go to v1.22.3

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/crossplane/function-template-go
 
 go 1.21
 
-toolchain go1.21.3
+toolchain go1.22.3
 
 require (
 	github.com/alecthomas/kong v0.9.0