[gimp-help/wip/wormnest/ci] ci: add python3-libxml2 dependency

[Jacob Boerema <jboerema src gnome org>]

commit 5bfdc60ad27f7a4c00ee4784491d3c91a4964639
Author: Jacob Boerema <jgboerema gmail com>
Date:   Wed Jun 2 18:13:04 2021 -0400

    ci: add python3-libxml2 dependency

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 88e8b1b8d..3f12ffdae 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,8 +26,10 @@ build-debian:
         pngcrush
         pngnq
         python3
+        python3-pip
         xsltproc
   script:
+    - python3 -m pip install --user libxml2-python3
     - mkdir _build
     - cd _build
     - ../autogen.sh --prefix=${INSTALL_PREFIX} --without-gimp