[Tech] Bump net.java.dev.jna:jna from 5.13.0 to 5.14.0 in /backend

Bumps [net.java.dev.jna:jna](https://github.com/java-native-access/jna) from 5.13.0 to 5.14.0.
- [Changelog](https://github.com/java-native-access/jna/blob/master/CHANGES.md)
- [Commits](java-native-access/jna@5.13.0...5.14.0)

---
updated-dependencies:
- dependency-name: net.java.dev.jna:jna
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

backend/build.gradle.kts

@@ -84,7 +84,7 @@ dependencies {
     testImplementation("org.springframework.boot:spring-boot-starter-test:3.2.5")
     testImplementation("org.springframework.restdocs:spring-restdocs-mockmvc:3.0.0")
     testImplementation("org.testcontainers:junit-jupiter:1.19.2")
-    testImplementation("net.java.dev.jna:jna:5.13.0")
+    testImplementation("net.java.dev.jna:jna:5.14.0")
     // TODO: move in tests only
     api("net.ttddyy:datasource-proxy:1.10")
 }