Update Gradle plugins.

PiperOrigin-RevId: 309231983

build.gradle

@@ -17,9 +17,9 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.1'
+        classpath 'com.android.tools.build:gradle:3.6.3'
         classpath 'com.novoda:bintray-release:0.9.1'
-        classpath 'com.google.android.gms:strict-version-matcher-plugin:1.2.0'
+        classpath 'com.google.android.gms:strict-version-matcher-plugin:1.2.1'
     }
 }
 allprojects {

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip