chore: update example to latest Flutter

Author: demchenkoalex

examples/flyer_chat/.metadata

@@ -4,7 +4,7 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: "c23637390482d4cf9598c3ce3f2be31aa7332daf"
+  revision: "ea121f8859e4b13e47a8f845e4586164519588bc"
   channel: "stable"
 
 project_type: app
@@ -13,26 +13,26 @@ project_type: app
 migration:
   platforms:
     - platform: root
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: android
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: ios
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: linux
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: macos
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: web
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: windows
-      create_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
-      base_revision: c23637390482d4cf9598c3ce3f2be31aa7332daf
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
 
   # User provided section