Do not download_inputs in addon Pipelines

Signed-off-by: tdruez <tdruez@nexb.com>

Author: tdruez

scanpipe/pipelines/find_vulnerabilities.py

@@ -31,6 +31,7 @@ class FindVulnerabilities(Pipeline):
     Vulnerability data is stored on each package and dependency instance.
     """
 
+    download_inputs = False
     is_addon = True
 
     @classmethod

scanpipe/pipelines/populate_purldb.py

@@ -28,6 +28,7 @@
 class PopulatePurlDB(Pipeline):
     """Populate PurlDB with discovered project packages and their dependencies."""
 
+    download_inputs = False
     is_addon = True
 
     @classmethod