[libxslt] Run Python 3 CI job with minimal configuration

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 349206b9aac083a3efdd7e42bffe46587aff4333
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Tue Aug 30 03:39:37 2022 +0200

    Run Python 3 CI job with minimal configuration
    
    This helps to detect issues when building with disabled modules.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2ca5355b..2c3e0363 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,6 +27,7 @@ gcc:
 gcc:python3:
   extends: .test
   variables:
+    CONFIG: "--without-crypto --without-debug --without-debugger --without-plugins"
     CFLAGS: "-O2"
     PYTHON: "/usr/bin/python3"