Bump org.springframework.security:spring-security-bom

Bumps [org.springframework.security:spring-security-bom](https://github.com/spring-projects/spring-security) from 5.8.6 to 5.8.7.
- [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@5.8.6...5.8.7)

---
updated-dependencies:
- dependency-name: org.springframework.security:spring-security-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

bom/pom.xml

@@ -64,7 +64,7 @@ THE SOFTWARE.
         <!-- https://docs.spring.io/spring-security/site/docs/5.5.4/reference/html5/#getting-maven-no-boot -->
         <groupId>org.springframework.security</groupId>
         <artifactId>spring-security-bom</artifactId>
-        <version>5.8.6</version>
+        <version>5.8.7</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>