AAPT2: Bump to version 2.19

Test: manual
Bug: 65645766
Change-Id: Id8bdb14e498bd79ff642f9ad56ef05ec7a5825af
diff --git a/tools/aapt2/Main.cpp b/tools/aapt2/Main.cpp
index 86f4c42..36ab30c 100644
--- a/tools/aapt2/Main.cpp
+++ b/tools/aapt2/Main.cpp
@@ -41,7 +41,7 @@
 static const char* sMajorVersion = "2";
 
 // Update minor version whenever a feature or flag is added.
-static const char* sMinorVersion = "18";
+static const char* sMinorVersion = "19";
 
 static void PrintVersion() {
   std::cerr << StringPrintf("Android Asset Packaging Tool (aapt) %s:%s", sMajorVersion,