Require analyzer 5.12.0

There was a recent change that added usage of the new `InvalidType` to
Mockito codegen, but it only appears in analyzer 5.12.

Fixes #656

PiperOrigin-RevId: 544605763

Author: Ilya Yanok

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 5.4.3-wip
+
+* Require analyzer 5.12.0.
+
 ## 5.4.2
 
 * Require code_builder 4.5.0.

lib/src/version.dart

@@ -1 +1 @@
-const packageVersion = '5.4.2';
+const packageVersion = '5.4.3-wip';

pubspec.yaml

@@ -1,5 +1,5 @@
 name: mockito
-version: 5.4.2
+version: 5.4.3-wip
 description: >-
   A mock framework inspired by Mockito with APIs for Fakes, Mocks,
   behavior verification, and stubbing.
@@ -9,7 +9,7 @@ environment:
   sdk: '>=2.19.0 <4.0.0'
 
 dependencies:
-  analyzer: '>=5.11.0 <6.0.0'
+  analyzer: '>=5.12.0 <6.0.0'
   build: '>=1.3.0 <3.0.0'
   code_builder: ^4.5.0
   collection: ^1.15.0