python-certifi: appease spec linter

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>

SPECS/python-certifi/python-certifi.spec

@@ -38,7 +38,7 @@ SSL certificates while verifying the identity of TLS hosts
 %py3_install
 
 %check
-%python3 setup.py test
+%{python3} setup.py test
 
 %files -n python3-certifi
 %defattr(-,root,root,-)