build: require go v1.22

This fixes our current ci issues. Seems like some dependencies have
updated to go1.22 and operator-sdk generate is not backwards compatible.
kubernetes-sigs/controller-runtime#2720 has
some details.

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

go.mod

@@ -1,7 +1,8 @@
 module github.com/rhobs/observability-operator
 
-go 1.21
-toolchain go1.22.2
+go 1.22.0
+
+toolchain go1.22.3
 
 require (
 	github.com/go-logr/logr v1.4.1