Merge pull request 'fix: GDELT 쿼리 URL 인코딩 수정' (#76) from fix/gdelt-url-encoding into develop

backend/src/main/java/gc/mda/kcg/collector/osint/OsintCollector.java

@@ -265,6 +265,6 @@ public class OsintCollector {
     }
 
     private String encodeQuery(String query) {
-        return query.replace(" ", "+");
+        return java.net.URLEncoder.encode(query, StandardCharsets.UTF_8);
     }
 }