Move sync_settings_ui onto crdt_sync_dart v0.11.0

Two different git refs for the same package name cannot coexist in one
resolution, so an app taking both sync_settings_ui and crdt_sync_flutter --
which is the intended pairing, and what lyricanki now does -- failed version
solving while this stayed pinned to v0.10.0.

v0.11.0 only widens what FirebaseAccount.tryParse accepts, so nothing here
changes behaviour: 29 tests green, analyze clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CFSGeWxHPY5rHUGrPqhcmG

sync_settings_ui/pubspec.yaml

@@ -5,7 +5,7 @@ description: >-
   injected closures -- no keystore or platform plugin access lives in this
   package itself.
 publish_to: 'none'
-version: 0.1.0
+version: 0.2.0
 
 environment:
   sdk: ^3.12.2
@@ -14,7 +14,7 @@ dependencies:
   crdt_sync:
     git:
       url: https://github.com/kuhyx/utils
-      ref: crdt_sync_dart-v0.10.0
+      ref: crdt_sync_dart-v0.11.0
       path: crdt_sync_dart
   flutter:
     sdk: flutter