Bump spring-expression from 3.2.18.RELEASE to 5.2.21.RELEASE in /gsec#17

dependabot[bot] wants to merge 1 commit intomasterPavlidisLab/gsec:masterfrom

dependabot/maven/gsec/org.springframework-spring-expression-5.2.21.RELEASEPavlidisLab/gsec:dependabot/maven/gsec/org.springframework-spring-expression-5.2.21.RELEASECopy head branch name to clipboard