chore(deps): bump com.netflix.graphql.dgs:graphql-dgs-spring-boot-starter from 5.3.0 to 8.5.7 in /backend/api

chore(deps): bump com.netflix.graphql.dgs:graphql-dgs-spring-boot-starter from 5.3.0 to 8.5.7 in /backend/api #2134