Prepare to publish analyzer 5.12.0 and _fe_analyzer_shared 60.0.0

Change-Id: Iea968efec63034ed3830dbc46ad0a29158dd9fcb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/302363
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>

pkg/_fe_analyzer_shared/pubspec.yaml

@@ -1,5 +1,5 @@
 name: _fe_analyzer_shared
-version: 59.0.0
+version: 60.0.0
 description: Logic that is shared between the front_end and analyzer packages.
 repository: https://github.com/dart-lang/sdk/tree/main/pkg/_fe_analyzer_shared
 

pkg/analyzer/CHANGELOG.md

@@ -1,4 +1,4 @@
-## 5.12.0-dev
+## 5.12.0
 * Deprecated `DartType.isDynamic`, use `is DynamicType` instead.
 * Updated `NamedType` to use `importPrefix` and `name2` token.
   The deprecated `name` node is still visited in this version, but will stop

pkg/analyzer/pubspec.yaml

@@ -1,5 +1,5 @@
 name: analyzer
-version: 5.12.0-dev
+version: 5.12.0
 description: >-
   This package provides a library that performs static analysis of Dart code.
 repository: https://github.com/dart-lang/sdk/tree/main/pkg/analyzer
@@ -8,7 +8,7 @@ environment:
   sdk: '>=2.19.0 <3.0.0'
 
 dependencies:
-  _fe_analyzer_shared: ^59.0.0
+  _fe_analyzer_shared: ^60.0.0
   collection: ^1.17.0
   convert: ^3.0.0
   crypto: ^3.0.0