Bump spring-webmvc from 5.0.4.RELEASE to 5.2.20.RELEASE in /Ch9/bugFixing/before/courses#93

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dependabot/maven/Ch9/bugFixing/before/courses/org.springframework-spring-webmvc-5.2.20.RELEASEApress/software-development-from-a-to-z:dependabot/maven/Ch9/bugFixing/before/courses/org.springframework-spring-webmvc-5.2.20.RELEASECopy head branch name to clipboard