chore(deps): update dependency go to v1.25.4

Author: elastic-renovate-prod[bot]

go.mod

@@ -2,7 +2,7 @@ module go.elastic.co/go-licence-detector
 
 go 1.24.0
 
-toolchain go1.25.2
+toolchain go1.25.4
 
 require (
 	github.com/cyphar/filepath-securejoin v0.4.1