Update dependency go to v1.23.4

renovate[bot] · web-flow · commit 6815be7f15de · 2024-12-18T09:19:55.000Z
diff --git a/go.mod b/go.mod
@@ -2,7 +2,7 @@ module github.com/projectsyn/steward
 
 go 1.23.0
 
-toolchain go1.23.3
+toolchain go1.23.4
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0
