chore: update dummy variable

related to jenkins-x/jx#8670

Makefile

@@ -18,7 +18,7 @@ ROOT_PACKAGE := github.com/$(ORG_REPO)
 # This does not reflect the go binary version which was used to build the jx binary, and also does not reflect the version in the catalog.
 # The sole purpose of this variable is to build a new binary if we ever need to build a new jx binary with a new go version with no code change.
 # If you notice that this version is not the same as the catalog version, please open a PR, the maintainers are happy to review it.
-DUMMY_GO_VERSION := 1.19
+DUMMY_GO_VERSION := 1.22.3
 
 GO_VERSION := $(shell $(GO) version | sed -e 's/^[^0-9.]*\([0-9.]*\).*/\1/')
 GO_DEPENDENCIES := $(call rwildcard,pkg/,*.go) $(call rwildcard,cmd/j,*.go)