[web] Add Ethiopic font fallback. (#53180)

Adds `Noto Sans Ethiopic` font as a fallback so Flutter web can render text in ethiopic scripts (for languages like Tigrinya or Amharic)

## Issues

* Fixes flutter/flutter#149616

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

Author: ditman

DEPS

@@ -1029,7 +1029,7 @@ deps = {
       'packages': [
         {
           'package': 'flutter/flutter_font_fallbacks',
-          'version': '6126aab94a469ad17de6c170885b8dee8e8283cfd2383c4c77cf54c702374981'
+          'version': 'c81f5a2b369b48df3728d2b247a27901bb76bbce0c40b343fe1cc924a36b36ea'
         }
       ],
       'dep_type': 'cipd',

lib/web_ui/dev/roll_fallback_fonts.dart

@@ -365,6 +365,7 @@ const List<String> fallbackFonts = <String>[
   'Noto Sans Egyptian Hieroglyphs',
   'Noto Sans Elbasan',
   'Noto Sans Elymaic',
+  'Noto Sans Ethiopic',
   'Noto Sans Georgian',
   'Noto Sans Glagolitic',
   'Noto Sans Gothic',