tzdata: Set min_sdk_version to "30"

Just a cosmetic cleanup since "R" resolves to 30 as well.

Test: m
Bug: 171330443
Merged-In: I9846b24a55dffbbf728f35a9708f8ddd07545b6d
Change-Id: I9846b24a55dffbbf728f35a9708f8ddd07545b6d
(cherry picked from commit cc7af28f158b79e4f661c4dc78c20c5d7684ab70)
diff --git a/apex/Android.bp b/apex/Android.bp
index 1ff0743..9fece58 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -16,7 +16,7 @@
 apex_defaults {
     name: "com.android.tzdata-defaults",
     updatable: true,
-    min_sdk_version: "R",
+    min_sdk_version: "30",
 
     // Use a custom AndroidManifest.xml used for API targeting.
     androidManifest: ":com.android.tzdata-androidManifest",