Gradle: drop unavailable JCenter Bintray from config

This repository has been shut down a year ago:

* https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/
* https://testfairy.com/blog/jcenter-and-bintray-is-shutting-down-what-to-do/

And yet we still keep references to it in the Gradle config.

Resolves: https://github.com/status-im/status-react/issues/13320

Signed-off-by: Jakub Sokołowski <jakub@status.im>

android/build.gradle

@@ -17,7 +17,7 @@ buildscript {
     repositories {
         flatDir { dirs "libs", "${rootDir}/app/libs" }
         google()
-        jcenter()
+        mavenCentral()
     }
     dependencies {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.31"
@@ -52,20 +52,15 @@ allprojects {
 
     repositories {
         mavenLocal()
-        maven {
         // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
-            url("$rootDir/../node_modules/react-native/android")
+        maven { url("$rootDir/../node_modules/react-native/android") }
-        }
-        maven {
         // Android JSC is installed from npm
-            url("$rootDir/../node_modules/jsc-android/dist")
+        maven { url("$rootDir/../node_modules/jsc-android/dist") }
-        }
+        // For geth, function, and status-go
-
-        google()
-        jcenter()
-
-        // for geth, function, and status-go
         flatDir { dirs "libs", System.env.STATUS_GO_ANDROID_LIBDIR }
+        // Everything Else
+        google()
+        mavenCentral()
         maven { url "https://www.jitpack.io" }
     }
 }

nix/deps/nodejs-patched/README.md

@@ -8,7 +8,7 @@ Modules provided by `yarn2nix` are normally fine, but we use `react-native-*` pa
 ```js
 repositories {
     google()
-    jcenter()
+    maven { url "https://www.jitpack.io" }
 }
 ```
 And these need to be patched and replaced with `mavenLocal()` to make sure Gradle doesn't try to fetch dependencies from remote repos.