Fix unit tests

Author: TimoPtr

app/src/test/kotlin/io/homeassistant/companion/android/widgets/todo/TodoUtils.kt

@@ -1,14 +1,14 @@
 package io.homeassistant.companion.android.widgets.todo
 
 import io.homeassistant.companion.android.common.data.integration.Entity
-import java.util.Calendar
+import java.time.LocalDateTime
 
 internal fun fakeServerEntity(entityId: String, friendlyName: String? = null): Entity {
     return Entity(
         entityId = entityId,
         state = "",
         attributes = if (friendlyName != null) mapOf("friendly_name" to friendlyName) else emptyMap(),
-        lastChanged = Calendar.getInstance(),
-        lastUpdated = Calendar.getInstance(),
+        lastChanged = LocalDateTime.now(),
+        lastUpdated = LocalDateTime.now(),
     )
 }