Release 0.18.5 (850) and update extractor version

Update User-Agent

Author: TobiGr

app/build.gradle

@@ -11,8 +11,8 @@ android {
         applicationId "org.schabi.newpipe"
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 840
-        versionName "0.18.4"
+        versionCode 850
+        versionName "0.18.5"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -63,7 +63,7 @@ dependencies {
         exclude module: 'support-annotations'
     })
 
-    implementation 'com.github.TeamNewPipe:NewPipeExtractor:v0.18.4'
+    implementation 'com.github.TeamNewPipe:NewPipeExtractor:fc465c8bf'
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.mockito:mockito-core:2.23.0'
 

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

@@ -38,7 +38,7 @@
 import static org.schabi.newpipe.MainActivity.DEBUG;
 
 public class DownloaderImpl extends Downloader {
-    public static final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0";
+    public static final String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0";
 
     private static DownloaderImpl instance;
     private String mCookies;

fastlane/metadata/android/en-US/changelogs/850.txt

@@ -0,0 +1 @@
+Tn this release the YouTube website version was updated. The old website version is going to be discontinued in March and therefore you are required to upgrade NewPipe.