Update gradle again.

Or at least try to, last time I tried we hit buildbot issues.

android/build.gradle

@@ -103,7 +103,6 @@ android {
 			assets.srcDirs = [
 					'../assets',
 			]
-			jni.srcDirs = ['..']
 		}
 		gold {
 			res.srcDirs = ['gold/res']

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.3'
+        classpath 'com.android.tools.build:gradle:7.0.1'
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -3,6 +3,6 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip
 android.useAndroidX=true
 android.enableJetifier=true