build: workaround issue with SDK not being available publicly

Bitrise could not build the application because it did not have access to our private SDK since the AAR is not hosted anywhere.

.gitignore

@@ -3,7 +3,7 @@
 *.ap_
 
 # Built libraries
-*.aar
+#*.aar
 # *.so
 
 # Files for the ART/Dalvik VM

zcash-android-wallet-app/app/build.gradle

@@ -13,8 +13,8 @@ android {
         applicationId "cash.z.android.wallet"
         minSdkVersion buildConfig.minSdkVersion
         targetSdkVersion buildConfig.targetSdkVersion
-        versionCode 14 // todo: change this to 1_00_04 format, once we graduate beyond zero for the major version number because leading zeros indicate on octal number.
-        versionName "0.2.1-alpha"
+        versionCode 16 // todo: change this to 1_00_04 format, once we graduate beyond zero for the major version number because leading zeros indicate on octal number.
+        versionName "0.2.3-alpha"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }

zcash-android-wallet-app/build.gradle

@@ -40,7 +40,7 @@ buildscript {
         'material': 'com.google.android.material:material:1.0.0',
         'speeddial': 'com.leinardi.android:speed-dial:2.0.0',
         'zcash': [
-            'walletSdk': "cash.z.android.wallet:zcash-android-wallet-sdk:1.2.0"
+            'walletSdk': "cash.z.android.wallet:zcash-android-wallet-sdk:1.2.3@aar"
         ]
     ]
     repositories {
@@ -58,6 +58,9 @@ buildscript {
 allprojects {
     repositories {
         mavenLocal()
+        flatDir {
+            dirs 'libs'
+        }
         google()
         jcenter()