Update gradle version

build.gradle

@@ -1,6 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.android_plugin_version = '3.6.3'
+    ext.android_plugin_version = '4.0.0'
     ext.kotlin_version = '1.3.72'
     ext.kotlinx_version = '1.3.6'
     repositories {

buildsystem/compile.sh

@@ -249,7 +249,7 @@ fi
 
 if [ ! -d "gradle/wrapper" ]; then
     diagnostic "Downloading gradle"
-    GRADLE_VERSION=5.6.4
+    GRADLE_VERSION=6.1.1
     GRADLE_URL=https://download.videolan.org/pub/contrib/gradle/gradle-${GRADLE_VERSION}-bin.zip
     wget ${GRADLE_URL} 2>/dev/null || curl -O ${GRADLE_URL} || fail "gradle: download failed"
 

buildsystem/gitlab/.gitlab-ci.yml

@@ -2,7 +2,7 @@ cache:
     paths:
         - .gradle/
         - gradle-5.4.1/
-        - gradle-5.6.4/
+        - gradle-6.1.1/
         - gradle/
         - gradlew