release: v9.0.0 and update release notes (appium#2041)

Author: SrinivasanTarget

CHANGELOG.md

@@ -5,6 +5,30 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+_9.0.0_
+- **[DOCUMENTATION]**
+ - Add 8 to 9 migration guide. [#2039](https://github.com/appium/java-client/pull/2039)
+- **[BREAKING CHANGE]** [#2036](https://github.com/appium/java-client/pull/2036)
+ - Set minimum Java version to 11.
+ - The previously deprecated MobileBy class has been removed. Use AppiumBy instead.
+ - The previously deprecated launchApp, resetApp and closeApp methods have been removed. Use extension methods instead.
+ - The previously deprecated WindowsBy class and related location strategies have been removed.
+ - The previously deprecated ByAll class has been removed in favour of the Selenium one.
+ - The previously deprecated AndroidMobileCapabilityType interface has been removed. Use driver options instead
+ - The previously deprecated IOSMobileCapabilityType interface has been removed. Use driver options instead
+ - The previously deprecated MobileCapabilityType interface has been removed. Use driver options instead
+ - The previously deprecated MobileOptions class has been removed. Use driver options instead
+ - The previously deprecated YouiEngineCapabilityType interface has been removed. Use driver options instead
+ - Removed several misspelled methods. Use properly spelled alternatives instead
+ - Removed startActivity method from AndroidDriver. Use 'mobile: startActivity' extension method instead
+ - Removed the previously deprecated APPIUM constant from the AutomationName interface
+ - Removed the previously deprecated PRE_LAUNCH value from the GeneralServerFlag enum
+ - Moved AppiumUserAgentFilter class to io.appium.java_client.internal.filters package
+- **[REFACTOR]**
+ - Align Selenium version in test dependencies. [#2042](https://github.com/appium/java-client/pull/2042)
+- **[DEPENDENCY CHANGE]**
+ - Removed dependencies to Apache Commons libraries.
+
 _8.6.0_
 
 - **[BUG FIX]**

gradle.properties

@@ -2,4 +2,4 @@ org.gradle.daemon=true
 
 selenium.version=4.14.1
 # Please increment the value in a release
-appiumClient.version=8.6.0
+appiumClient.version=9.0.0