build: use Go 1.24 tools pattern (#10281)

script/next-version.go

@@ -4,8 +4,8 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at https://mozilla.org/MPL/2.0/.
 
-//go:build ignore
-// +build ignore
+//go:build tools
+// +build tools
 
 package main
 

script/prune_mocks.go

@@ -35,7 +35,7 @@ func main() {
 		if err != nil {
 			log.Fatal(err)
 		}
-		err = exec.Command("go", "run", "golang.org/x/tools/cmd/goimports", "-w", path).Run()
+		err = exec.Command("go", "tool", "goimports", "-w", path).Run()
 		if err != nil {
 			log.Fatal(err)
 		}