Temporary change to make automated tests run

Since the official nextcloud android-library does not have the new `AdvancedX509KeyManager`, the automated tests cannot build th
e app. So for that I refer to my fork of the android-library for now. This commit shall be reverted before merge.

Signed-off-by: Elv1zz <elv1zz.git@gmail.com>

app/build.gradle

@@ -240,7 +240,10 @@ android {
 dependencies {
     // dependencies for app building
     implementation 'androidx.multidex:multidex:2.0.1'
-    implementation("com.github.nextcloud:android-library:$androidLibraryVersion") {
+//    implementation("com.github.nextcloud:android-library:$androidLibraryVersion") {
+    // temporarily using my own version of the nextcloud android-library so automated compile and unit tests
+    // are able to build the app. should be removed before merging.
+    implementation("com.github.elv1zz:nextcloud-android-library:$androidLibraryVersion") {
         exclude group: 'org.ogce', module: 'xpp3' // unused in Android and brings wrong Junit version
     }