fix: Drop deprecated htmlunit driver

BREAKING CHANGE: HtmlUnit was removed from Selenium, so this project 
will also drop support

Author: hypery2k

pom.xml

@@ -142,7 +142,7 @@
             </dependency>
             <dependency>
                 <groupId>org.seleniumhq.selenium</groupId>
-                <artifactId>htmlunit3-driver</artifactId>
+                <artifactId>selenium-chrome-driver</artifactId>
                 <version>${selenium.version}</version>
             </dependency>
             <dependency>

zap-client-api/pom.xml

@@ -101,7 +101,7 @@
         </dependency>
         <dependency>
             <groupId>org.seleniumhq.selenium</groupId>
-            <artifactId>htmlunit3-driver</artifactId>
+            <artifactId>selenium-chrome-driver</artifactId>
         </dependency>
         <dependency>
             <groupId>com.codeborne</groupId>

zap-client-api/src/main/java/net/cst/zap/api/authentication/WebDriverFactory.java

@@ -8,7 +8,6 @@
 import org.openqa.selenium.chrome.ChromeOptions;
 import org.openqa.selenium.firefox.FirefoxDriver;
 import org.openqa.selenium.firefox.FirefoxOptions;
-import org.openqa.selenium.htmlunit.HtmlUnitDriver;
 
 public final class WebDriverFactory {
 
@@ -19,8 +18,6 @@ public static WebDriver makeWebDriver(ZapInfo zapInfo, AuthenticationInfo authen
         int port = zapInfo.getPort();
 
         switch (authenticationInfo.getSeleniumDriver()) {
-            case HTMLUNIT:
-                return makeHtmlUnitDriver(host, port);
             case FIREFOX:
                 return makeFirefoxDriver(host, port);
             case CHROME:
@@ -30,12 +27,6 @@ public static WebDriver makeWebDriver(ZapInfo zapInfo, AuthenticationInfo authen
         }
     }
 
-    public static HtmlUnitDriver makeHtmlUnitDriver(String host, int port) {
-        HtmlUnitDriver driver = new HtmlUnitDriver();
-        driver.setProxy(host, port);
-        return driver;
-    }
-
     public static FirefoxDriver makeFirefoxDriver(String host, int port) {
         FirefoxOptions profile = new FirefoxOptions();
         profile.setCapability("network.proxy.type", FIREFOX_MANUAL_PROXY_CONFIGURATION_OPTION);