chore(deps): bump the minorandpatch group in /backend with 3 updates

Bumps the minorandpatch group in /backend with 3 updates: org.flywaydb:flyway-database-postgresql, [org.testcontainers:postgresql](https://github.com/testcontainers/testcontainers-java) and [org.springframework.boot](https://github.com/spring-projects/spring-boot).


Updates `org.flywaydb:flyway-database-postgresql` from 10.15.2 to 10.16.0

Updates `org.testcontainers:postgresql` from 1.19.8 to 1.20.0
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...1.20.0)

Updates `org.springframework.boot` from 3.3.1 to 3.3.2
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.3.1...v3.3.2)

---
updated-dependencies:
- dependency-name: org.flywaydb:flyway-database-postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minorandpatch
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minorandpatch
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minorandpatch
...

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

backend/build.gradle

@@ -2,7 +2,7 @@ import org.gradle.api.tasks.testing.logging.TestExceptionFormat
 import org.gradle.api.tasks.testing.logging.TestLogEvent
 
 plugins {
-    id 'org.springframework.boot' version '3.3.1'
+    id 'org.springframework.boot' version '3.3.2'
     id 'io.spring.dependency-management' version '1.1.6'
     id 'org.jetbrains.kotlin.jvm' version '2.0.0'
     id 'org.jetbrains.kotlin.plugin.spring' version '2.0.0'
@@ -35,7 +35,7 @@ dependencies {
     implementation "org.postgresql:postgresql:42.7.3"
     implementation "org.apache.commons:commons-csv:1.11.0"
     implementation "org.springdoc:springdoc-openapi-starter-webmvc-ui:2.6.0"
-    implementation "org.flywaydb:flyway-database-postgresql:10.15.2"
+    implementation "org.flywaydb:flyway-database-postgresql:10.16.0"
     implementation "org.jetbrains.exposed:exposed-spring-boot-starter:0.52.0"
     implementation "org.jetbrains.exposed:exposed-jdbc:0.52.0"
     implementation "org.jetbrains.exposed:exposed-json:0.52.0"
@@ -61,7 +61,7 @@ dependencies {
     testImplementation "io.jsonwebtoken:jjwt-impl:0.12.6"
     testImplementation "io.jsonwebtoken:jjwt-jackson:0.12.6"
     testImplementation "com.ninja-squad:springmockk:4.0.2"
-    testImplementation "org.testcontainers:postgresql:1.19.8"
+    testImplementation "org.testcontainers:postgresql:1.20.0"
     testImplementation "org.junit.platform:junit-platform-launcher:1.10.3"
     ktlint("com.pinterest.ktlint:ktlint-cli:1.3.1") {
         attributes {