Upgrade to Servlet API 4.0.1 (aligned with Tomcat 9 and Undertow 2)

Issue: SPR-16470

spring-messaging/spring-messaging.gradle

@@ -26,7 +26,7 @@ dependencies {
 	optional("com.fasterxml.jackson.core:jackson-databind:${jackson2Version}")
 	optional("javax.xml.bind:jaxb-api:2.3.0")
 	testCompile("javax.inject:javax.inject-tck:1")
-	testCompile("javax.servlet:javax.servlet-api:3.1.0")
+	testCompile("javax.servlet:javax.servlet-api:4.0.1")
 	testCompile("javax.validation:validation-api:1.1.0.Final")
 	testCompile("com.thoughtworks.xstream:xstream:1.4.10")
 	testCompile("org.apache.activemq:activemq-broker:5.8.0")

spring-test/spring-test.gradle

@@ -28,7 +28,7 @@ dependencies {
 	optional("javax.activation:activation:1.1.1")
 	optional("javax.el:javax.el-api:3.0.1-b04")
 	optional("javax.inject:javax.inject:1")
-	optional("javax.servlet:javax.servlet-api:4.0.0")
+	optional("javax.servlet:javax.servlet-api:4.0.1")
 	optional("javax.servlet.jsp:javax.servlet.jsp-api:2.3.2-b02")
 	optional("javax.servlet.jsp.jstl:javax.servlet.jsp.jstl-api:1.2.1")
 	optional("javax.xml.bind:jaxb-api:2.3.0")

spring-webflux/spring-webflux.gradle

@@ -20,7 +20,7 @@ dependencies {
 	compile("io.projectreactor:reactor-core")
 	optional(project(":spring-context"))
 	optional(project(":spring-context-support"))  // for FreeMarker support
-	optional("javax.servlet:javax.servlet-api:3.1.0")
+	optional("javax.servlet:javax.servlet-api:4.0.1")
 	optional("javax.websocket:javax.websocket-api:1.1")
 	optional("org.webjars:webjars-locator-core:0.35")
 	optional("org.freemarker:freemarker:${freemarkerVersion}")

spring-webmvc/spring-webmvc.gradle

@@ -13,7 +13,7 @@ dependencyManagement {
 }
 
 dependencies {
-	provided("javax.servlet:javax.servlet-api:4.0.0")
+	provided("javax.servlet:javax.servlet-api:4.0.1")
 	compile(project(":spring-aop"))
 	compile(project(":spring-beans"))
 	compile(project(":spring-context"))
@@ -47,7 +47,7 @@ dependencies {
 	optional("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}")
 	optional("org.jetbrains.kotlin:kotlin-stdlib:${kotlinVersion}")
 	optional("org.reactivestreams:reactive-streams")
-	testCompile("javax.servlet:javax.servlet-api:4.0.0")
+	testCompile("javax.servlet:javax.servlet-api:4.0.1")
 	testCompile("org.eclipse.jetty:jetty-servlet:${jettyVersion}") {
 		exclude group: "javax.servlet", module: "javax.servlet"
 	}

spring-websocket/spring-websocket.gradle

@@ -19,7 +19,7 @@ dependencies {
 	compile(project(":spring-web"))
 	optional(project(":spring-messaging"))
 	optional(project(":spring-webmvc"))
-	optional("javax.servlet:javax.servlet-api:3.1.0")
+	optional("javax.servlet:javax.servlet-api:4.0.1")
 	optional("javax.websocket:javax.websocket-api:1.1")
 	optional("org.apache.tomcat:tomcat-websocket:${tomcatVersion}") {
 		exclude group: "org.apache.tomcat", module: "tomcat-websocket-api"