Update UTC time to LocalTime (#1041) (EXPOSUREAPP-1863)

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/transaction/RetrieveDiagnosisKeysTransaction.kt

@@ -119,10 +119,10 @@ object RetrieveDiagnosisKeysTransaction : Transaction() {
     private val exportFilesForRollback = AtomicReference<List<File>>()
 
     suspend fun startWithConstraints() {
-        val currentDate = DateTime(Instant.now(), DateTimeZone.UTC)
+        val currentDate = DateTime(Instant.now(), DateTimeZone.getDefault())
         val lastFetch = DateTime(
             LocalData.lastTimeDiagnosisKeysFromServerFetch(),
-            DateTimeZone.UTC
+            DateTimeZone.getDefault()
         )
         if (LocalData.lastTimeDiagnosisKeysFromServerFetch() == null ||
             currentDate.withTimeAtStartOfDay() != lastFetch.withTimeAtStartOfDay()

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/viewmodel/TracingViewModel.kt

@@ -64,10 +64,10 @@ class TracingViewModel : ViewModel() {
             try {
 
                 // get the current date and the date the diagnosis keys were fetched the last time
-                val currentDate = DateTime(Instant.now(), DateTimeZone.UTC)
+                val currentDate = DateTime(Instant.now(), DateTimeZone.getDefault())
                 val lastFetch = DateTime(
                     LocalData.lastTimeDiagnosisKeysFromServerFetch(),
-                    DateTimeZone.UTC
+                    DateTimeZone.getDefault()
                 )
 
                 // check if the keys were not already retrieved today