fix: proper typing for last call

pyvulnerabilitylookup/api.py

@@ -58,7 +58,7 @@ def get_info(self) -> dict[str, Any]:
         r = self.session.get(urljoin(self.root_url, 'info'))
         return r.json()
 
-    def get_last(self, number: int | None=None, source: str | None = None) -> dict[str, Any]:
+    def get_last(self, number: int | None=None, source: str | None = None) -> list[dict[str, Any]]:
         '''Get the last vulnerabilities
 
         :param number: The number of vulnerabilities to get