Add missing VulnerabilityAnalysis comparator for sorting

Signed-off-by: Riku Häkli <hakli.riku@gmail.com>

Author: Riku Häkli

cyclonedx/model/vulnerability.py

@@ -349,6 +349,11 @@ def __eq__(self, other: object) -> bool:
             return self.__comparable_tuple() == other.__comparable_tuple()
         return False
 
+    def __lt__(self, other: Any) -> bool:
+        if isinstance(other, VulnerabilityAnalysis):
+            return self.__comparable_tuple() < other.__comparable_tuple()
+        return NotImplemented
+
     def __hash__(self) -> int:
         return hash(self.__comparable_tuple())