Add path dep (#2002)

Author: grouma

build_daemon/pubspec.yaml

@@ -12,6 +12,7 @@ dependencies:
   built_value: ^6.3.0
   pedantic: ^1.0.0
   package_resolver: ^1.0.6
+  path: ^1.6.2
   pool: ^1.3.6
   shelf: ^0.7.4
   shelf_web_socket: ^0.2.2+4