Update to latest analyzer

pubspec.yaml

Index: pubspec.yaml
diff --git a/pubspec.yaml b/pubspec.yaml
index 34c413a926299752c32b3288b8431851389bb9fd..dc21eb8067ae15c22436360ce80766ca88a78b7a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ homepage: https://github.com/dart-lang/dev_compiler
 dependencies:
   # Pinning a specific version of the analyzer as we don't support newer ones yet
   # (https://github.com/dart-lang/dev_compiler/issues/393).
-  analyzer: 0.26.2+1
+  analyzer: 0.27.1+1
   args: ^0.13.0
   cli_util: ^0.0.1
   crypto: ^0.9.0
@@ -26,11 +26,14 @@ dependencies:
   source_span: ^1.0.2
   yaml: ^2.1.2
 
+dependency_overrides:
+  analyzer: { path: ../../dart-repo/sdk/pkg/analyzer }
+
 dev_dependencies:
   # We pin a specific version to ensure everyone is formatting the code exactly
   # the same way. This is because any change in dart_style, even non-breaking
   # changes, may change the output format.
-  dart_style: 0.2.0
+  dart_style: 0.2.2
   test: ^0.12.0
 
 environment: