자바 버전 변경/각종 의존성 변경해도 해결되지가 않습니다 ㅜ

plugins {
   id 'java'
   id 'org.springframework.boot' version '2.7.1'
   id 'io.spring.dependency-management' version '1.0.15.RELEASE'
}

group = 'jpabook'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

configurations {
   compileOnly {
      extendsFrom annotationProcessor
   }
}

repositories {
   mavenCentral()
}

dependencies {
   implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
   implementation 'org.springframework.boot:spring-boot-starter-web'
   //추가
   implementation 'org.springframework.boot:spring-boot-starter-validation'
   compileOnly 'org.projectlombok:lombok'
   runtimeOnly 'com.h2database:h2'
   annotationProcessor 'org.projectlombok:lombok'
   testImplementation 'org.springframework.boot:spring-boot-starter-test'

   //JUnit4 추가
   testImplementation("org.junit.vintage:junit-vintage-engine") {
      exclude group: "org.hamcrest", module: "hamcrest-core"
   }

}

test {
   useJUnitPlatform()
}