chore: updates for appwrite 1.4.2

Author: christyjacob4

src/client.ts

@@ -11,11 +11,11 @@ export class Client {
     endpoint: string = 'https://HOSTNAME/v1';
     headers: Payload = {
         'content-type': '',
-        'user-agent' : `AppwriteDenoSDK/8.0.2 (${Deno.build.os}; ${Deno.build.arch})`,
+        'user-agent' : `AppwriteDenoSDK/9.0.0 (${Deno.build.os}; ${Deno.build.arch})`,
         'x-sdk-name': 'Deno',
         'x-sdk-platform': 'server',
         'x-sdk-language': 'deno',
-        'x-sdk-version': '8.0.2',
+        'x-sdk-version': '9.0.0',
         'X-Appwrite-Response-Format':'1.4.0',
     };