dev dep: latest build_web_compilers (#237)

diff --git a/pubspec.yaml b/pubspec.yaml
index 0944a5c..05d64c6 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,7 +18,7 @@
 dev_dependencies:
   build_runner: ^1.0.0
   build_version: ^2.0.0
-  build_web_compilers: ^0.4.0
+  build_web_compilers: ^1.0.0
   collection: ^1.2.0
   expected_output: ^1.2.1
   html: '>=0.12.2 <0.14.0'