change(api): update api version

Author: Jiankai Zheng

README.md

@@ -144,14 +144,14 @@ Latest official release:
 ```xml
 <dependency>
   <groupId>nl.jiankai</groupId>
-  <artifactId>spotify-web-api-wrapper</artifactId>
-  <version>1.5.3</version>
+    <artifactId>spotify-web-api-wrapper</artifactId>
+    <version>1.5.4</version>
 </dependency>
 ```
 ### Gradle
 Latest official release:
 ```gradle
-implementation 'nl.jiankai:spotify-web-api-wrapper:1.5.3'
+implementation 'nl.jiankai:spotify-web-api-wrapper:1.5.4'
 ```
 
 ## License

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>nl.jiankai</groupId>
     <artifactId>spotify-web-api-wrapper</artifactId>
-    <version>1.5.3</version>
+    <version>1.5.4</version>
 
     <name>Spotify Web API Java Wrapper</name>
     <description>A Java Wrapper for Spotify's Web API</description>