build(deps): bump org.testcontainers:testcontainers

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.20.6 to 1.21.0.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.6...1.21.0)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

build.gradle

@@ -29,8 +29,8 @@ dependencies {
     implementation 'org.postgresql:postgresql:42.7.5'
 //    implementation 'org.flywaydb:flyway-core:10.20.1'
     implementation 'org.flywaydb:flyway-database-postgresql:11.8.0'
-    testImplementation 'org.testcontainers:postgresql:1.20.6'
-    testImplementation 'org.testcontainers:testcontainers:1.20.6'
+    testImplementation 'org.testcontainers:postgresql:1.21.0'
+    testImplementation 'org.testcontainers:testcontainers:1.21.0'
     testImplementation 'io.rest-assured:rest-assured'
 
     compileOnly 'org.projectlombok:lombok'