Bump spring-security-core from 5.6.4 to 5.6.9

Bumps [spring-security-core](https://github.com/spring-projects/spring-security) from 5.6.4 to 5.6.9.
- [Release notes](https://github.com/spring-projects/spring-security/releases)
- [Changelog](https://github.com/spring-projects/spring-security/blob/main/RELEASE.adoc)
- [Commits](spring-projects/spring-security@5.6.4...5.6.9)

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

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

pom.xml

@@ -22,7 +22,7 @@
 	<properties>
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
-		<spring-security.version>5.6.4</spring-security.version>
+		<spring-security.version>5.6.9</spring-security.version>
 	</properties>
 	<modules>
 		<module>spring-security-wechat-core</module>