Add dependency management for more Selenium modules

Previously, we only had dependency management for
selenium-htmlunit-driver. It depends on three other Selenium modules
for which dependency management was not provided. This means that there
was a risk that a mixture of versions would end up on the classpath.

This commit adds dependency management for the Selenium modules upon
which selenium-htmlunit-driver depends.

Closes gh-5520

spring-boot-dependencies/pom.xml

@@ -1807,11 +1807,26 @@
 				<artifactId>lombok</artifactId>
 				<version>${lombok.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.seleniumhq.selenium</groupId>
+				<artifactId>selenium-api</artifactId>
+				<version>${selenium.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.seleniumhq.selenium</groupId>
 				<artifactId>selenium-htmlunit-driver</artifactId>
 				<version>${selenium.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.seleniumhq.selenium</groupId>
+				<artifactId>selenium-remote-driver</artifactId>
+				<version>${selenium.version}</version>
+			</dependency>
+			<dependency>
+				<groupId>org.seleniumhq.selenium</groupId>
+				<artifactId>selenium-support</artifactId>
+				<version>${selenium.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.skyscreamer</groupId>
 				<artifactId>jsonassert</artifactId>