Bump spring-expression from 5.0.16.RELEASE to 5.2.21.RELEASE in /SSM-master#35

dependabot[bot] wants to merge 1 commit intomastertao799738313/Java-Demo:masterfrom

dependabot/maven/SSM-master/org.springframework-spring-expression-5.2.21.RELEASEtao799738313/Java-Demo:dependabot/maven/SSM-master/org.springframework-spring-expression-5.2.21.RELEASECopy head branch name to clipboard