1.6.0

Update go.mod dependencies

--------

index dcaf942..ba000de 100644
@@ -1,6 +1,8 @@
 module code.cloudfoundry.org/clock

-go 1.20
+go 1.22
+
+toolchain go1.22.3

 	github.com/onsi/ginkgo/v2 v2.20.1