build(deps): Bump spring-boot-starter-test from 2.5.4 to 2.5.5

Bumps [spring-boot-starter-test](https://github.com/spring-projects/spring-boot) from 2.5.4 to 2.5.5.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.5.4...v2.5.5)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-test
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -58,7 +58,7 @@ dependencies {
     embed 'org.apache.logging.log4j:log4j-web:2.14.1'
 
     developmentOnly 'org.springframework.boot:spring-boot-devtools:2.5.4'
-    testImplementation 'org.springframework.boot:spring-boot-starter-test:2.5.4'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test:2.5.5'
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.2'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.2'