Android: Update Android Studio canary version

TBR=agrieve@chromium.org

Bug: 620034
Change-Id: I1e0b1d665692cc727453c7c974402d71aa4bc01b
Reviewed-on: https://chromium-review.googlesource.com/c/1288889Reviewed-by: Peter Wen <wnwen@chromium.org>
Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600778}

build/android/gradle/root.jinja

@@ -10,7 +10,7 @@ buildscript {
     }
     dependencies {
 {% if channel == 'canary' %}
-        classpath "com.android.tools.build:gradle:3.3.0-alpha05"
+        classpath "com.android.tools.build:gradle:3.3.0-alpha13"
 {% elif channel == 'beta' %}
         classpath "com.android.tools.build:gradle:3.1.0-beta4"
 {% else %}