⚠️ Soft-bump to Go 1.13

DirectXMan12 · DirectXMan12 · commit e74902c3d84b · 2019-11-15T12:25:25.000-08:00
This soft-bumps to Go 1.13. Mandatory Go 1.13 changes may follow in future point releases (e.g. kubernetes-sigs#606).
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module sigs.k8s.io/controller-runtime
 
-go 1.12
+go 1.13
 
 require (
 	github.com/evanphx/json-patch v4.5.0+incompatible
