migrate fixtures/_testSound and _webdevSmoke
diff --git a/fixtures/_testPackage/pubspec.yaml b/fixtures/_testPackage/pubspec.yaml
index 2fb8652..ace5caa 100644
--- a/fixtures/_testPackage/pubspec.yaml
+++ b/fixtures/_testPackage/pubspec.yaml
@@ -2,6 +2,9 @@
 version: 1.0.0
 description: >-
   A fake package used for testing imports. Imports _test.
+  This code is for testing that debugger works with weak null safety so we
+  should not migrate it to null safety. Once Dart 3.0 is released, we should
+  delete this directory.
 publish_to: none
 
 environment:
diff --git a/fixtures/_testPackageSound/pubspec.yaml b/fixtures/_testPackageSound/pubspec.yaml
index 1d16ae5..e7c5b40 100644
--- a/fixtures/_testPackageSound/pubspec.yaml
+++ b/fixtures/_testPackageSound/pubspec.yaml
@@ -12,5 +12,5 @@
     path: ../_testSound
 
 dev_dependencies:
-  build_runner: ^2.0.0
-  build_web_compilers: ^3.0.0
+  build_runner: ^2.1.11
+  build_web_compilers: ^3.2.3
diff --git a/fixtures/_testSound/pubspec.yaml b/fixtures/_testSound/pubspec.yaml
index 83f4cb6..8a34709 100644
--- a/fixtures/_testSound/pubspec.yaml
+++ b/fixtures/_testSound/pubspec.yaml
@@ -8,9 +8,9 @@
   sdk: '>=2.13.0 <3.0.0'
 
 dependencies:
-  intl: ^0.17.0-nullsafety.2
-  path: ^1.6.1
+  intl: ^0.17.0
+  path: ^1.8.2
 
 dev_dependencies:
-  build_runner: ^2.0.0
-  build_web_compilers: ^3.0.0
+  build_runner: ^2.1.11
+  build_web_compilers: ^3.2.3
diff --git a/fixtures/_webdevSmoke/pubspec.yaml b/fixtures/_webdevSmoke/pubspec.yaml
index ef8e6e8..2f0aa7c 100644
--- a/fixtures/_webdevSmoke/pubspec.yaml
+++ b/fixtures/_webdevSmoke/pubspec.yaml
@@ -1,5 +1,10 @@
 name: _webdev_smoke
-description: A test fixture for webdev testing.
+description:
+  A test fixture for webdev testing.
+  This code is for testing that debugger works with weak null safety so we
+  should not migrate it to null safety. Once Dart 3.0 is released, we should
+  delete this directory.
+
 
 # The versions in this pubspec should match the requirements
 # defined by webdev. That is the SDK constraint should be the