#68 Clean vote and citizen Entity

remove last warnings

src/test/kotlin/functional/MailerTest.kt

@@ -9,6 +9,7 @@ import fr.dcproject.common.email.Mailer
 import io.ktor.locations.KtorExperimentalLocationsAPI
 import io.ktor.server.testing.withTestApplication
 import io.ktor.util.KtorExperimentalAPI
+import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.InternalCoroutinesApi
 import org.junit.jupiter.api.Tag
 import org.junit.jupiter.api.Tags
@@ -24,6 +25,7 @@ import org.koin.test.get
 @Tags(Tag("functional"))
 class MailerTest : KoinTest, AutoCloseKoinTest() {
     @InternalCoroutinesApi
+    @ExperimentalCoroutinesApi
     @Test
     @Tags(Tag("online"))
     fun `can be send an email`() {