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

Bumps [org.springframework.security:spring-security-web](https://github.com/spring-projects/spring-security) from 5.8.11 to 5.8.15.
- [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@5.8.11...5.8.15)

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

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

pom.xml

@@ -19,7 +19,7 @@
         <jackson.version>2.17.0</jackson.version>
         <jackson.databind.version>2.17.0</jackson.databind.version>
         <spring.version>6.1.14</spring.version>
-        <spring-security.version>5.8.11</spring-security.version>
+        <spring-security.version>5.8.15</spring-security.version>
         <commons-io.version>2.17.0</commons-io.version>
         <immutables.version>2.10.1</immutables.version>
         <cloudfoundry-client.version>5.12.1.RELEASE</cloudfoundry-client.version>