Add bottom padding (#2762)

Corona-Warn-App/src/main/res/layout/trace_location_attendee_checkins_fragment.xml

@@ -20,6 +20,8 @@
         android:id="@+id/check_ins_list"
         android:layout_width="0dp"
         android:layout_height="0dp"
+        android:clipToPadding="false"
+        android:paddingBottom="@dimen/spacing_huge"
         android:visibility="gone"
         app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
         app:layout_constraintBottom_toBottomOf="parent"