chore(deps): bump io.spring.dependency-management in /backend/api

Bumps [io.spring.dependency-management](https://github.com/spring-gradle-plugins/dependency-management-plugin) from 1.1.4 to 1.1.5.
- [Release notes](https://github.com/spring-gradle-plugins/dependency-management-plugin/releases)
- [Commits](spring-gradle-plugins/dependency-management-plugin@v1.1.4...v1.1.5)

---
updated-dependencies:
- dependency-name: io.spring.dependency-management
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

backend/api/build.gradle

@@ -24,7 +24,7 @@
 
 plugins {
     id 'org.springframework.boot' version '2.7.5'
-    id 'io.spring.dependency-management' version '1.1.4'
+    id 'io.spring.dependency-management' version '1.1.5'
     id "org.jetbrains.kotlin.plugin.spring"
     id "org.jetbrains.kotlin.jvm"
     id "com.google.cloud.tools.jib" version "3.4.2"