Use lower bound for package-url release candidate

Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

setup.cfg

@@ -69,7 +69,7 @@ install_requires =
     coreapi>=2.3.3
 
     #essentials
-    packageurl-python>=0.10.4
+    packageurl-python>=0.10.5rc1
     univers>=30.9.0
     license-expression>=21.6.14