build(deps): Bump com.auth0:java-jwt from 4.4.0 to 4.5.0 in /backend

Bumps [com.auth0:java-jwt](https://github.com/auth0/java-jwt) from 4.4.0 to 4.5.0.
- [Release notes](https://github.com/auth0/java-jwt/releases)
- [Changelog](https://github.com/auth0/java-jwt/blob/master/CHANGELOG.md)
- [Commits](auth0/java-jwt@4.4.0...4.5.0)

---
updated-dependencies:
- dependency-name: com.auth0:java-jwt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

backend/build.gradle

@@ -95,7 +95,7 @@ dependencies {
 	implementation group: 'org.json', name: 'json', version: '20250107'
 
 	// https://mvnrepository.com/artifact/com.auth0/java-jwt
-	implementation group: 'com.auth0', name: 'java-jwt', version: '4.4.0'
+	implementation group: 'com.auth0', name: 'java-jwt', version: '4.5.0'
 
 	// compile instead of testCompile because the web service uses it
 	implementation junitDependency