Update libraries, some lints (#4099)

* Update some plugins

* Fix some miscellaneous lints

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt

@@ -39,7 +39,7 @@ class ChapterLoadByNumber {
 /**
  * Load strategy using the chapter upload date. This ordering ignores scanlators
  */
-class ChapterLoadByUploadDate() {
+class ChapterLoadByUploadDate {
     fun get(allChapters: List<Chapter>): List<Chapter> {
         return allChapters.sortedBy { it.date_upload }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsSheet.kt

@@ -6,7 +6,6 @@ import android.widget.Spinner
 import androidx.annotation.ArrayRes
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
-import androidx.core.view.plusAssign
 import androidx.core.widget.NestedScrollView
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import com.tfcporciuncula.flow.Preference

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonViewer.kt

@@ -152,7 +152,7 @@ class WebtoonViewer(val activity: ReaderActivity, val isContinuous: Boolean = tr
         // Initial opening - preload allowed
         currentPage ?: return true
 
-        val nextItem = adapter.items.getOrNull(adapter.items.count() - 1)
+        val nextItem = adapter.items.getOrNull(adapter.items.size - 1)
         val nextChapter = (nextItem as? ChapterTransition.Next)?.to ?: (nextItem as? ReaderPage)?.chapter
 
         // Allow preload for