chore(deps)(deps): bump com.github.ben-manes.caffeine:caffeine

Bumps [com.github.ben-manes.caffeine:caffeine](https://github.com/ben-manes/caffeine) from 3.1.8 to 3.2.1.
- [Release notes](https://github.com/ben-manes/caffeine/releases)
- [Commits](ben-manes/caffeine@v3.1.8...v3.2.1)

---
updated-dependencies:
- dependency-name: com.github.ben-manes.caffeine:caffeine
  dependency-version: 3.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Backend/build.gradle.kts

@@ -60,7 +60,7 @@ dependencies {
     implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:2.1.0")
     implementation("nl.basjes.parse.useragent:yauaa:7.30.0")
     implementation("com.bucket4j:bucket4j-core:8.10.1")
-    implementation("com.github.ben-manes.caffeine:caffeine:3.1.8")
+    implementation("com.github.ben-manes.caffeine:caffeine:3.2.1")
     implementation("org.springframework.boot:spring-boot-starter-cache")
 
     // Kotlin