[flutter_markdown] update `markdown` dependency (#1395)

diff --git a/packages/flutter_markdown/CHANGELOG.md b/packages/flutter_markdown/CHANGELOG.md
index 43559fd..1f9f98b 100644
--- a/packages/flutter_markdown/CHANGELOG.md
+++ b/packages/flutter_markdown/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.10
+
+ * Update `markdown` dependency
+
 ## 0.6.9+1
 
  * Remove build status badge from `README.md`
diff --git a/packages/flutter_markdown/pubspec.yaml b/packages/flutter_markdown/pubspec.yaml
index ae0a7e4..31b82b2 100644
--- a/packages/flutter_markdown/pubspec.yaml
+++ b/packages/flutter_markdown/pubspec.yaml
@@ -4,7 +4,7 @@
   formatted with simple Markdown tags.
 repository: https://github.com/flutter/packages/tree/main/packages/flutter_markdown
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+flutter_markdown%22
-version: 0.6.9+1
+version: 0.6.10
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
@@ -13,7 +13,7 @@
 dependencies:
   flutter:
     sdk: flutter
-  markdown: ^4.0.0
+  markdown: ^5.0.0
   meta: ^1.3.0
   path: ^1.8.0
 
diff --git a/packages/flutter_markdown/test/link_test.dart b/packages/flutter_markdown/test/link_test.dart
index 20e947a..fca6a26 100644
--- a/packages/flutter_markdown/test/link_test.dart
+++ b/packages/flutter_markdown/test/link_test.dart
@@ -404,7 +404,7 @@
         );
 
         // Link is treated as ordinary text.
-        expectInvalidLink('[link](<foo&gt;)');
+        expectInvalidLink('[link](<foo>)');
         expect(linkTapResults, isNull);
       },
     );