chore: Update sdk

pubspec.lock

@@ -471,7 +471,7 @@ packages:
       name: fluffybox
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.2"
+    version: "0.4.3"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -976,7 +976,7 @@ packages:
       name: matrix
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.12"
+    version: "0.8.13"
   matrix_api_lite:
     dependency: transitive
     description:

pubspec.yaml

@@ -57,7 +57,7 @@ dependencies:
   keyboard_shortcuts: ^0.1.4
   localstorage: ^4.0.0+1
   lottie: ^1.2.2
-  matrix: ^0.8.11
+  matrix: ^0.8.13
   matrix_link_text: ^1.0.2
   open_noti_settings: ^0.4.0
   package_info_plus: ^1.3.0