build(deps-dev): Bump org.springframework:spring-context (#3404)

Bumps [org.springframework:spring-context](https://github.com/spring-projects/spring-framework) from 5.1.5.RELEASE to 5.2.21.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.1.5.RELEASE...v5.2.21.RELEASE)

---
updated-dependencies:
- dependency-name: org.springframework:spring-context
  dependency-type: direct:development
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

sentinel-extension/sentinel-annotation-aspectj/pom.xml

@@ -15,7 +15,7 @@
     <properties>
         <aspectj.version>1.9.2</aspectj.version>
 
-        <spring.test.version>5.1.5.RELEASE</spring.test.version>
+        <spring.test.version>5.2.21.RELEASE</spring.test.version>
     </properties>
 
     <dependencies>