Update dependency javax.servlet:javax.servlet-api to v4

Author: renovate-bot

pom.xml

@@ -38,7 +38,7 @@
         <junit.version>4.13</junit.version>
         <logback.version>1.2.3</logback.version>
         <resource-server.version>1.3.1</resource-server.version>
-        <servlet-api.version>3.1.0</servlet-api.version>
+        <servlet-api.version>4.0.1</servlet-api.version>
         <slf4j.version>1.7.30</slf4j.version>
         <spring.version>4.3.29.RELEASE</spring.version>