fix: min sdk version

Author: JunkFood02

app/src/main/AndroidManifest.xml

@@ -18,7 +18,10 @@
         tools:ignore="ScopedStorage" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
 
-    <tools:uses-sdk tools:overrideLibrary="com.yausername.youtubedl_android, com.yausername.aria2c, com.yausername.ffmpeg, com.yausername.youtubedl_common" />
+
+    <uses-sdk
+        android:minSdkVersion="21"
+        tools:overrideLibrary="com.yausername.youtubedl_android, com.yausername.aria2c, com.yausername.ffmpeg, com.yausername.youtubedl_common" />
 
     <queries>
         <intent>