Bump dart_style to 3.0.0

* Also bump the analyzer version used to validate generation.
* Also regenerate web
* Also regenerate renderers

update-test

Author: srawlins

.github/workflows/test.yaml

@@ -22,9 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        # TODO(srawlins): Re-enable stable when stable works with analyzer 6.9.0
-        # (Dart 3.6.0).
-        sdk: [dev]
+        sdk: [3.6.0, dev]
         job: [main, flutter, packages, sdk-docs]
         include:
           - os: macos-latest
@@ -37,9 +35,9 @@ jobs:
             # Do not try to run flutter against the "stable" sdk,
             # it is unlikely to work and produces uninteresting
             # results.
-          - sdk: stable
+          - sdk: 3.6.0
             job: flutter
-          - sdk: stable
+          - sdk: 3.6.0
             job: sdk-docs
 
     steps: