Android: Update Android Studio canary version

3.6 Canary 2 is now available on gLinux.

Tbr: agrieve@chromium.org
Bug: 620034
Change-Id: Id62c9bfb42ad902636cb655266e9abb2333558db
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1645384Reviewed-by: Peter Wen <wnwen@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Auto-Submit: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666348}

build/android/gradle/root.jinja

@@ -10,7 +10,7 @@ buildscript {
     }
     dependencies {
 {% if channel == 'canary' %}
-        classpath "com.android.tools.build:gradle:3.5.0-beta01"
+        classpath "com.android.tools.build:gradle:3.6.0-alpha02"
 {% elif channel == 'beta' %}
         classpath "com.android.tools.build:gradle:3.1.0-beta4"
 {% else %}