Bump spring-webmvc from 4.3.11.RELEASE to 5.2.20.RELEASE in /spring-mvc-theme-xml-demo#239

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dependabot/maven/spring-mvc-theme-xml-demo/org.springframework-spring-webmvc-5.2.20.RELEASEjamalgithub/workdev:dependabot/maven/spring-mvc-theme-xml-demo/org.springframework-spring-webmvc-5.2.20.RELEASECopy head branch name to clipboard