Bump org.springframework:spring-core in /standalone-metastore

Bumps [org.springframework:spring-core](https://github.com/spring-projects/spring-framework) from 5.3.21 to 5.3.27.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.21...v5.3.27)

---
updated-dependencies:
- dependency-name: org.springframework:spring-core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

standalone-metastore/pom.xml

@@ -111,7 +111,7 @@
     <jetty.version>9.4.40.v20210413</jetty.version>
     <javax.annotation-api.version>1.3.2</javax.annotation-api.version>
     <!-- If upgrading, upgrade atlas as well in ql/pom.xml, which brings in some springframework dependencies transitively -->
-    <spring.version>5.3.21</spring.version>
+    <spring.version>5.3.27</spring.version>
     <!-- Thrift properties -->
     <thrift.home>you-must-set-this-to-run-thrift</thrift.home>
     <thrift.gen.dir>${basedir}/src/gen/thrift</thrift.gen.dir>