Revert to Java 8

Author: nyg

library/src/main/java/dev/andstuff/kraken/api/KrakenUtils.java

@@ -67,7 +67,7 @@ public static byte[] stringToBytes(String input) {
     }
 
     public static String urlEncode(String input) throws UnsupportedEncodingException {
-        return URLEncoder.encode(input, StandardCharsets.UTF_8);
+        return URLEncoder.encode(input, "UTF-8");
     }
 
     private KrakenUtils() {

pom.xml

@@ -48,7 +48,9 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.release>21</maven.compiler.release>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.target>8</maven.compiler.target>
 
         <!-- Third-party dependencies -->
         <lombok.version>1.18.30</lombok.version>