[Android] Upgrade kotlin to v1.3.70

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Mar 10 10:56:44 2020 +0100| [f925e18d7e7f3af8f4af0b769d02a4c0a8e5f64f] | committer: Nicolas Pomepuy

Upgrade kotlin to v1.3.70

> https://code.videolan.org/videolan/vlc-android/commit/f925e18d7e7f3af8f4af0b769d02a4c0a8e5f64f
---

 build.gradle | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/build.gradle b/build.gradle
index 1a378c8b9..b62c56b48 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,8 +1,8 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
     ext.android_plugin_version = '3.6.0'
-    ext.kotlin_version = '1.3.61'
-    ext.kotlinx_version = '1.3.3'
+    ext.kotlin_version = '1.3.70'
+    ext.kotlinx_version = '1.3.4'
     repositories {
         flatDir dirs: "gradle/plugins"
         google()