Use aapt2

Replace usage of `aapt` with `aapt2`.

Bug: 236602069
Test: m nothing
Change-Id: I0c3b224351aff82fa251fbe83447fd262ab520b1
diff --git a/java/app.go b/java/app.go
index c369978..1995f13 100755
--- a/java/app.go
+++ b/java/app.go
@@ -1377,7 +1377,7 @@
 		Flag("--enforce-uses-libraries").
 		Input(inputFile).
 		FlagWithOutput("--enforce-uses-libraries-status ", statusFile).
-		FlagWithInput("--aapt ", ctx.Config().HostToolPath(ctx, "aapt"))
+		FlagWithInput("--aapt ", ctx.Config().HostToolPath(ctx, "aapt2"))
 
 	if outputFile != nil {
 		cmd.FlagWithOutput("-o ", outputFile)