Bump the maven group in /app with 2 updates

Bumps the maven group in /app with 2 updates: [org.springframework.boot:spring-boot-starter-web](https://github.com/spring-projects/spring-boot) and [org.springframework.boot:spring-boot-starter-test](https://github.com/spring-projects/spring-boot).


Updates `org.springframework.boot:spring-boot-starter-web` from 3.5.0 to 3.5.1
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.0...v3.5.1)

Updates `org.springframework.boot:spring-boot-starter-test` from 3.5.0 to 3.5.1
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.0...v3.5.1)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-web
  dependency-version: 3.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven
- dependency-name: org.springframework.boot:spring-boot-starter-test
  dependency-version: 3.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven
...

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

Author: dependabot[bot]

app/build.gradle.kts

@@ -21,14 +21,14 @@ dependencies {
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit5")
 
     // https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web
-    implementation("org.springframework.boot:spring-boot-starter-web:3.5.0")
+    implementation("org.springframework.boot:spring-boot-starter-web:3.5.4")
 
     // Use the JUnit 5 integration.
     testImplementation(libs.junit.jupiter.engine)
 
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
     // https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test
-    testImplementation("org.springframework.boot:spring-boot-starter-test:3.5.0")
+    testImplementation("org.springframework.boot:spring-boot-starter-test:3.5.4")
 
     // This dependency is used by the application.
     implementation(libs.guava)