Remove app update check on Android 5.x

app/src/main/java/eu/kanade/tachiyomi/ui/more/AboutController.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.ui.more
 
 import android.app.Dialog
+import android.os.Build
 import android.os.Bundle
 import androidx.core.os.bundleOf
 import androidx.preference.PreferenceScreen
@@ -142,6 +143,11 @@ class AboutController : SettingsController() {
     private fun checkVersion() {
         if (activity == null) return
 
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            activity?.toast(R.string.update_check_eol)
+            return
+        }
+
         activity?.toast(R.string.update_check_look_for_updates)
 
         launchNow {