Start analyzer 10.1.0-dev, analyzer_plugin 0.14.3-dev, analyzer_testing 0.1.11-dev, analysis_server_plugin 0.3.9-dev

Change-Id: I2ec7613ce0abcfa6e55f8c7837860319d9503adf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/477641
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>

pkg/analysis_server_plugin/pubspec.yaml

@@ -1,6 +1,6 @@
 name: analysis_server_plugin
 description: A framework and support code for building plugins for the analysis server.
-version: 0.3.8
+version: 0.3.9-dev
 repository: https://github.com/dart-lang/sdk/tree/main/pkg/analysis_server_plugin
 
 environment:
@@ -11,8 +11,8 @@ resolution: workspace
 dependencies:
   # See the release policy for managing this dependency at
   # pkg/analyzer/doc/implementation/releasing.md.
-  analyzer: 10.0.2
-  analyzer_plugin: 0.14.2
+  analyzer: 10.1.0-dev
+  analyzer_plugin: 0.14.3-dev
   meta: ^1.16.0
   yaml: ^3.1.0
   yaml_edit: ^2.2.0