chore: update sdk versions

Author: christyjacob4

README.md

@@ -21,7 +21,7 @@ Add this to your package's `pubspec.yaml` file:
 
 ```yml
 dependencies:
-  appwrite: ^8.0.0
+  appwrite: ^8.1.0
 ```
 
 You can install packages from the command line:

lib/src/client_browser.dart

@@ -43,7 +43,7 @@ class ClientBrowser extends ClientBase with ClientMixin {
       'x-sdk-name': 'Flutter',
       'x-sdk-platform': 'client',
       'x-sdk-language': 'flutter',
-      'x-sdk-version': '8.0.0',
+      'x-sdk-version': '8.1.0',
       'X-Appwrite-Response-Format' : '1.0.0',
     };
 

lib/src/client_io.dart

@@ -64,7 +64,7 @@ class ClientIO extends ClientBase with ClientMixin {
       'x-sdk-name': 'Flutter',
       'x-sdk-platform': 'client',
       'x-sdk-language': 'flutter',
-      'x-sdk-version': '8.0.0',
+      'x-sdk-version': '8.1.0',
       'X-Appwrite-Response-Format' : '1.0.0',
     };
 

pubspec.yaml

@@ -1,5 +1,5 @@
 name: appwrite
-version: 8.0.0
+version: 8.1.0
 description: Appwrite is an open-source self-hosted backend server that abstract and simplify complex and repetitive development tasks behind a very simple REST API
 homepage: https://appwrite.io
 repository: https://github.com/appwrite/sdk-for-flutter