Upgrade Servlet, JSP and WebSocket API versions

This commit updates the Spring Framework baseline for the Servlet, JSP
and WebSocket APIs.
This also removes the previously deprecated APIs in JSP `PageContext`
and guards against the deprecation of the `PushBuilder` API.

See gh-33918

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ServletRequestMethodArgumentResolver.java

@@ -70,6 +70,7 @@ import org.springframework.web.servlet.support.RequestContextUtils;
 public class ServletRequestMethodArgumentResolver implements HandlerMethodArgumentResolver {
 
 	@Override
+	@SuppressWarnings("deprecation")
 	public boolean supportsParameter(MethodParameter parameter) {
 		Class<?> paramType = parameter.getParameterType();
 		return (WebRequest.class.isAssignableFrom(paramType) ||
@@ -121,6 +122,7 @@ public class ServletRequestMethodArgumentResolver implements HandlerMethodArgume
 	}
 
 	@Nullable
+	@SuppressWarnings("deprecation")
 	private Object resolveArgument(Class<?> paramType, HttpServletRequest request) throws IOException {
 		if (HttpSession.class.isAssignableFrom(paramType)) {
 			HttpSession session = request.getSession();