feat: Add async support for CVE augmentation

Included mvn dep cleanup in this MR

Resolves #29 (closed)

src/main/java/org/eclipsefoundation/cve/model/CveProjectData.java

@@ -12,7 +12,6 @@
 package org.eclipsefoundation.cve.model;
 
 import java.util.List;
-import java.util.Map;
 import java.util.Optional;
 
 import javax.annotation.Nullable;