termux-am: Add patch to update build

packages/termux-am/update-build.patch

@@ -0,0 +1,43 @@
+Submitted upstream at https://github.com/michalbednarski/TermuxAm/pull/4
+
+diff --git a/app/build.gradle b/app/build.gradle
+index 7888fcd..07c189e 100644
+--- a/app/build.gradle
++++ b/app/build.gradle
+@@ -1,11 +1,11 @@
+ apply plugin: 'com.android.application'
+ 
+ android {
+-    compileSdkVersion 26
++    compileSdkVersion 28
+     defaultConfig {
+         applicationId "com.example.termuxam"
+         minSdkVersion 21
+-        targetSdkVersion 26
++        targetSdkVersion 28
+         versionCode 1
+         versionName "0.1"
+         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+diff --git a/build.gradle b/build.gradle
+index e6b32bc..6c2bb63 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -7,7 +7,7 @@ buildscript {
+         jcenter()
+     }
+     dependencies {
+-        classpath 'com.android.tools.build:gradle:3.0.1'
++        classpath 'com.android.tools.build:gradle:3.3.0'
+         
+ 
+         // NOTE: Do not place your application dependencies here; they belong
+diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
+index a23653e..4f86dee 100644
+--- a/gradle/wrapper/gradle-wrapper.properties
++++ b/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-4.1-all.zip
++distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip