Update libraries, some lints (#4099)

* Update some plugins

* Fix some miscellaneous lints

app/src/main/java/eu/kanade/tachiyomi/util/storage/EpubFile.kt

@@ -175,10 +175,10 @@ class EpubFile(file: File) : Closeable {
      */
     private fun getPathSeparator(): String {
         val meta = zip.getEntry("META-INF\\container.xml")
-        if (meta != null) {
-            return "\\"
+        return if (meta != null) {
+            "\\"
         } else {
-            return "/"
+            "/"
         }
     }
 
@@ -206,10 +206,10 @@ class EpubFile(file: File) : Closeable {
      */
     private fun getParentDirectory(path: String): String {
         val separatorIndex = path.lastIndexOf(pathSeparator)
-        if (separatorIndex >= 0) {
-            return path.substring(0, separatorIndex)
+        return if (separatorIndex >= 0) {
+            path.substring(0, separatorIndex)
         } else {
-            return ""
+            ""
         }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/util/system/ImageUtil.kt

@@ -51,10 +51,7 @@ object ImageUtil {
     }
 
     private fun ByteArray.compareWith(magic: ByteArray): Boolean {
-        for (i in magic.indices) {
-            if (this[i] != magic[i]) return false
-        }
-        return true
+        return magic.indices.none { this[it] != magic[it] }
     }
 
     private fun charByteArrayOf(vararg bytes: Int): ByteArray {