fix some compile errors after switching to hibernate-panache-kotlin

src/main/kotlin/net/nifni/ours/database/BaseEntity.kt

@@ -13,4 +13,4 @@ abstract class BaseEntity(
     var id: Long? = null,
     @Column(nullable = false, name = "created_at")
     var createdAt: Instant = Instant.now()
-) : PanacheEntityBase()
+) : PanacheEntityBase

src/main/kotlin/net/nifni/ours/database/user/UserRepository.kt

@@ -1,6 +1,6 @@
 package net.nifni.ours.database.user
 
-import io.quarkus.hibernate.orm.panache.PanacheRepository
+import io.quarkus.hibernate.orm.panache.kotlin.PanacheRepository
 import jakarta.enterprise.context.ApplicationScoped
 
 @ApplicationScoped