build(go): 更新依赖模块并清理无用依赖

移除多个间接依赖项，包括 github.com/beorn7/perks、github.com/cespare/xxhash/v2、
github.com/prometheus/* 系列依赖等。同时更新了 golang.org/x/net 和 golang.org/x/sys
至新版本，并引入新的间接依赖 github.com/google/go-cmp v0.7.0。

go.mod

@@ -3,20 +3,15 @@ module dot
 go 1.25.2
 
 require (
-	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
-	github.com/miekg/dns v1.1.68 // indirect
-	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/prometheus/client_golang v1.23.2 // indirect
-	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.66.1 // indirect
-	github.com/prometheus/procfs v0.16.1 // indirect
-	go.yaml.in/yaml/v2 v2.4.2 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7
+	github.com/miekg/dns v1.1.68
+)
+
+require (
+	github.com/google/go-cmp v0.7.0 // indirect
 	golang.org/x/mod v0.24.0 // indirect
 	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/sync v0.14.0 // indirect
 	golang.org/x/sys v0.35.0 // indirect
 	golang.org/x/tools v0.33.0 // indirect
-	google.golang.org/protobuf v1.36.8 // indirect
 )