Bump org.springframework.security:spring-security-oauth2-client

Bumps [org.springframework.security:spring-security-oauth2-client](https://github.com/spring-projects/spring-security) from 5.6.2 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@5.6.2...5.6.9)

---
updated-dependencies:
- dependency-name: org.springframework.security:spring-security-oauth2-client
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -57,7 +57,7 @@
      <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-oauth2-client</artifactId>
-       <version>5.6.2</version>
+       <version>5.6.9</version>
      </dependency>
      <dependency>
        <groupId>org.springframework.security</groupId>