JAVA-2563: Upgrade Spring Boot version to 2.3.3.RELEASE (#9985)
* JAVA-2563: Upgrade Spring Boot version to 2.3.3.RELEASE
* JAVA-2563: Downgrade spring-cloud-connectors-heroku to Spring Boot 2.2.6.RELEASE
* JAVA-2563: Add joda-time version
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Use MongoClients factory instead of MongoClient directly
* JAVA-2563: Downgrade spring-5-data-reactive to Spring Boot 2.2.6.RELEASE
* JAVA-2563: Switch back to default bootstrap mode for JPA
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Switch from ServerHttpRequest to ServerWebExchange interface
* JAVA-2563: Use OutputCaptureRule instead of OutputCapture
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Add spring-boot-starter-validation dependency
* JAVA-2563: Fix Jackson dependency
* JAVA-2563: Fix ManualEmbeddedMongoDbIntegrationTest
* JAVA-2563: Replace validation-api with spring-boot-starter-validation
* JAVA-2563: Fix usage of deprecated getErrorAttributes method
* JAVA-2563: Downgrade spring-data-cassandra-reactive to Spring Boot 2.2.6.RELEASE
* JAVA-2563: Set spring.datasource.generate-unique-name to false in spring-session-jdbc
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