Update dependency go to v1.25.6 (#64)

Co-authored-by: renovate-rancher[bot] <119870437+renovate-rancher[bot]@users.noreply.github.com>

Author: renovate-rancher[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/rancher/remotedialer-proxy
 
 go 1.25.0
 
-toolchain go1.25.5
+toolchain go1.25.6
 
 require (
 	github.com/gorilla/mux v1.8.1