Bump spring-core in /basic-mysql-hibernate-stored-procedure

Bumps [spring-core](https://github.com/spring-projects/spring-framework) from 4.0.6.RELEASE to 4.3.21.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v4.0.6.RELEASE...v4.3.21.RELEASE)

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

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Author: dependabot[bot]

basic-mysql-hibernate-stored-procedure/pom.xml

@@ -11,7 +11,7 @@
     <!--    <finalName>${FINAL_NAME}</finalName> -->
     <finalName>demo</finalName>
     <java.version>1.8</java.version>
-    <springframework.version>4.3.2.RELEASE</springframework.version>
+    <springframework.version>4.3.21.RELEASE</springframework.version>
     <hibernate.version>4.3.6.Final</hibernate.version>
     <hibernate-validator.version>4.3.0.Final</hibernate-validator.version> 
     <maven-compiler-plugin.version>3.6.1</maven-compiler-plugin.version>