chore(deps): update dependency go to v1.25.1

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/kairos-io/netboot
 
 go 1.23.0
 
-toolchain go1.24.4
+toolchain go1.25.1
 
 require (
 	github.com/go-bindata/go-bindata v3.1.2+incompatible