Bump Dart SDK to `1.23.0-dev.0.0` (#8222)

* ups pinned `test` to `0.12.15+9` (to play nice w/ the latest analyzer)
* integrates `analyzer` with analysis driver defaulting to ON

bin/internal/dart-sdk.version

-1.22.0-dev.10.6
+1.23.0-dev.0.0

dev/devicelab/pubspec.yaml

@@ -16,4 +16,4 @@ dependencies:
 
 dev_dependencies:
   # See packages/flutter_test/pubspec.yaml for why we're pinning this version.
-  test: 0.12.15+4
+  test: 0.12.15+9

packages/flutter_driver/pubspec.yaml

@@ -20,6 +20,6 @@ dependencies:
     sdk: flutter
 
 dev_dependencies:
-  test: 0.12.15+4
+  test: 0.12.15+9
   mockito: ^1.0.0
   quiver: ^0.24.0

packages/flutter_test/pubspec.yaml

@@ -5,7 +5,7 @@ dependencies:
   # The flutter tools depend on very specific internal implementation
   # details of the 'test' package, which change between versions, so
   # here we pin it precisely to avoid version skew across our packages.
-  test: 0.12.15+4
+  test: 0.12.15+9
 
   flutter:
     sdk: flutter

packages/flutter_tools/pubspec.yaml

@@ -34,7 +34,7 @@ dependencies:
   # We depend on very specific internal implementation details of the
   # 'test' package, which change between versions, so here we pin it
   # precisely.
-  test: 0.12.15+4
+  test: 0.12.15+9
 
   # Version from the vended Dart SDK as defined in `dependency_overrides`.
   analyzer: any