Merge pull request #813 from microsoft/dependabot/maven/samples/servlet-echo/junit-junit-4.13.1

Bump junit from 4.12 to 4.13.1 in /samples/servlet-echo

Author: tracyboehrer

samples/servlet-echo/pom.xml

@@ -46,7 +46,7 @@
       <dependency>
           <groupId>junit</groupId>
           <artifactId>junit</artifactId>
-          <version>4.12</version>
+          <version>4.13.1</version>
           <scope>test</scope>
       </dependency>
       <dependency>