chore: updates for appwrite 1.4.2

Author: christyjacob4

README.md

@@ -39,7 +39,7 @@ repositories {
 Next, add the dependency to your project's `build.gradle(.kts)` file:
 
 ```groovy
-implementation("io.appwrite:sdk-for-kotlin:3.0.2")
+implementation("io.appwrite:sdk-for-kotlin:4.0.0")
 ```
 
 ### Maven
@@ -50,7 +50,7 @@ Add this to your project's `pom.xml` file:
     <dependency>
         <groupId>io.appwrite</groupId>
         <artifactId>sdk-for-kotlin</artifactId>
-        <version>3.0.2</version>
+        <version>4.0.0</version>
     </dependency>
 </dependencies>
 ```

src/main/kotlin/io/appwrite/Client.kt

@@ -62,11 +62,11 @@ class Client @JvmOverloads constructor(
     init {
         headers = mutableMapOf(
             "content-type" to "application/json",
-            "user-agent" to "AppwriteKotlinSDK/3.0.2 ${System.getProperty("http.agent")}",
+            "user-agent" to "AppwriteKotlinSDK/4.0.0 ${System.getProperty("http.agent")}",
             "x-sdk-name" to "Kotlin",
             "x-sdk-platform" to "server",
             "x-sdk-language" to "kotlin",
-            "x-sdk-version" to "3.0.2",            "x-appwrite-response-format" to "1.4.0"
+            "x-sdk-version" to "4.0.0",            "x-appwrite-response-format" to "1.4.0"
         )
         config = mutableMapOf()