build(deps): Bump com.google.dagger:dagger from 2.52 to 2.55 in /backend

Bumps [com.google.dagger:dagger](https://github.com/google/dagger) from 2.52 to 2.55.
- [Release notes](https://github.com/google/dagger/releases)
- [Changelog](https://github.com/google/dagger/blob/master/CHANGELOG.md)
- [Commits](google/dagger@dagger-2.52...dagger-2.55)

---
updated-dependencies:
- dependency-name: com.google.dagger:dagger
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

backend/build.gradle

@@ -58,8 +58,8 @@ dependencies {
 	// --------------- Dagger (Dependency Injection) ---------------
 
 	// https://mvnrepository.com/artifact/com.google.dagger/dagger
-	implementation 'com.google.dagger:dagger:2.52'
-	annotationProcessor 'com.google.dagger:dagger-compiler:2.52'
+	implementation 'com.google.dagger:dagger:2.55'
+	annotationProcessor 'com.google.dagger:dagger-compiler:2.55'
 
 	// --------------- Fulib Libraries ---------------