Unbox chatId value to prevent using deprecated methods in telegram bot library, add notnull annotation

Author: rob93c

src/main/java/com/github/stickerifier/stickerify/media/MediaHelper.java

@@ -25,6 +25,7 @@
 import com.sksamuel.scrimage.ImmutableImage;
 import com.sksamuel.scrimage.webp.WebpWriter;
 import org.apache.tika.Tika;
+import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ws.schild.jave.EncoderException;
@@ -152,6 +153,7 @@ private float duration() {
 			return (end - start) / frameRate;
 		}
 
+		@NotNull
 		@Override
 		public String toString() {
 			return "animated sticker [" +

src/main/java/com/github/stickerifier/stickerify/telegram/model/TelegramRequest.java

@@ -12,6 +12,7 @@
 import com.pengrad.telegrambot.model.Sticker;
 import com.pengrad.telegrambot.model.Video;
 import com.pengrad.telegrambot.model.VideoNote;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.Arrays;
 import java.util.Objects;
@@ -59,7 +60,7 @@ private TelegramFile getBestPhoto(PhotoSize[] photos) {
 				.orElse(TelegramFile.TOO_LARGE);
 	}
 
-	public Long getChatId() {
+	public long getChatId() {
 		return message.chat().id();
 	}
 
@@ -95,6 +96,7 @@ public Answer getAnswerMessage() {
 		};
 	}
 
+	@NotNull
 	@Override
 	public String toString() {
 		var file = Optional.ofNullable(getFile()).map(TelegramFile::id).orElse(null);