Update version to 0.3.9.3-STABLE and improve version fetching logic

Author: Sandro642

build.gradle

@@ -5,7 +5,7 @@ plugins {
 }
 
 group = 'fr.sandro642.github'
-version = '0.3.9.2-STABLE'
+version = '0.3.9.3-STABLE'
 
 // Générer une classe de version automatiquement
 task generateVersionClass {

src/main/java/fr/sandro642/github/update/RetrieveLastVersion.java

@@ -26,7 +26,6 @@ public class RetrieveLastVersion {
      * Fetches the latest version from the GitHub API.
      * It sends a GET request to the tags endpoint of the ConnectLib repository
      * and retrieves the name of the first tag, which represents the latest version.
-     * @return
      */
     public String fetchVersion() {
         try {
@@ -40,7 +39,7 @@ public String fetchVersion() {
             Gson gson = new Gson();
             JsonArray data = gson.fromJson(response.body(), JsonArray.class);
 
-            if (data != null && data.size() > 0) {
+            if (data != null && !data.isEmpty()) {
                 JsonObject firstTag = data.get(0).getAsJsonObject();
                 return firstTag.get("name").getAsString();
             } else {