Increase standard cell height to 56 dp

This is to follow material design guidelines

Author: Pururun

android/lib/theme/src/main/kotlin/net/mullvad/mullvadvpn/lib/theme/dimensions/Dimensions.kt

@@ -14,7 +14,7 @@ data class Dimensions(
     val buttonVerticalPadding: Dp = 8.dp,
     val cellEndPadding: Dp = 16.dp,
     val cellFooterTopPadding: Dp = 6.dp,
-    val cellHeight: Dp = 52.dp,
+    val cellHeight: Dp = 56.dp,
     val cellLabelVerticalPadding: Dp = 14.dp,
     val cellStartPadding: Dp = 22.dp,
     val cellTopPadding: Dp = 6.dp,
@@ -44,8 +44,6 @@ data class Dimensions(
     val largePadding: Dp = 32.dp,
     val listIconSize: Dp = 24.dp,
     val listItemDivider: Dp = 1.dp,
-    val listItemHeight: Dp = 50.dp,
-    val listItemHeightExtra: Dp = 60.dp,
     val loadingSpinnerPadding: Dp = 12.dp,
     val loadingSpinnerSize: Dp = 24.dp,
     val loadingSpinnerSizeMedium: Dp = 28.dp,