Update OkHttp to 4.x

app/build.gradle

@@ -229,8 +229,7 @@ dependencies {
     implementation "org.jsoup:jsoup:1.14.3"
 
     // HTTP client
-    //noinspection GradleDependency --> do not update okhttp to keep supporting Android 4.4 users
-    implementation "com.squareup.okhttp3:okhttp:3.12.13"
+    implementation "com.squareup.okhttp3:okhttp:4.10.0"
 
     // Media player
     implementation "com.google.android.exoplayer:exoplayer-core:${exoPlayerVersion}"

app/src/main/java/org/schabi/newpipe/DownloaderImpl.java

@@ -135,7 +135,7 @@ public final class DownloaderImpl extends Downloader {
 
         RequestBody requestBody = null;
         if (dataToSend != null) {
-            requestBody = RequestBody.create(null, dataToSend);
+            requestBody = RequestBody.create(dataToSend);
         }
 
         final okhttp3.Request.Builder requestBuilder = new okhttp3.Request.Builder()