Version bump to 1.14.18.

Author: angelomelonas

src/main/java/com/bunq/sdk/http/BunqHeader.java

@@ -18,7 +18,7 @@ public enum BunqHeader {
     LANGUAGE("X-Bunq-Language", "en_US"),
     REGION("X-Bunq-Region", "nl_NL"),
     SERVER_SIGNATURE("X-Bunq-Server-Signature"),
-    USER_AGENT("User-Agent", "bunq-sdk-java/1.14.1");
+    USER_AGENT("User-Agent", "bunq-sdk-java/1.14.18");
 
     private static final String PREFIX = "X-Bunq-";