build(deps): update dependency go to v1.26.1

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/go-krb5/x
 
 go 1.25.0
 
-toolchain go1.26.0
+toolchain go1.26.1
 
 require (
 	github.com/google/uuid v1.6.0