🔧 chore: redisson v3.50.0 의존성 추가

Author: LimKangHyun

backend/build.gradle

@@ -29,6 +29,7 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+	implementation 'org.redisson:redisson-spring-boot-starter:3.50.0'
 	implementation 'org.springframework.boot:spring-boot-starter-websocket'
 	implementation 'org.springframework.boot:spring-boot-starter-security'
 	implementation 'org.springframework.boot:spring-boot-starter-oauth2-client'