Fix compilation issue with Jitpack

jitpack.yml

+install:
+  - ./gradlew :matrix-sdk-android:build :matrix-sdk-android:publishToMavenLocal -x :matrix-sdk-android:test
+  - find . -name "*.aar"

matrix-sdk-android/build.gradle

@@ -3,6 +3,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
 apply plugin: 'kotlin-parcelize'
 apply plugin: 'realm-android'
+apply plugin: 'maven-publish'
 
 buildscript {
     repositories {
@@ -196,3 +197,13 @@ dependencies {
 
     androidTestUtil 'androidx.test:orchestrator:1.3.0'
 }
+
+project.afterEvaluate {
+    publishing {
+        publications {
+            release(MavenPublication) {
+                from components.release
+            }
+        }
+    }
+}