chore(deps): update dependency golang to v1.23.4

Author: crossplane-renovate[bot]

Earthfile

@@ -3,7 +3,7 @@ VERSION --try --raw-output 0.8
 
 PROJECT crossplane/crossplane
 
-ARG --global GO_VERSION=1.23.3
+ARG --global GO_VERSION=1.23.4
 
 # reviewable checks that a branch is ready for review. Run it before opening a
 # pull request. It will catch a lot of the things our CI workflow will catch.