[damned-lies] Install python3-libxml2 via apt

[Andrea Veri <averi src gnome org>]

commit 571022b64b636be5c23a22ba83b7489c189fcdb8
Author: Andrea Veri <averi redhat com>
Date:   Tue Jun 8 15:51:09 2021 +0200

    Install python3-libxml2 via apt

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a0bac908..c1cde790 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ stages:
   - test
 
 before_script:
-  - apt update -qq && apt install -y -qq libicu-dev libxml2-dev python3-icu python3-aeidon gettext intltool 
itstool yelp-tools yelp-xsl gnome-doc-utils
+  - apt update -qq && apt install -y -qq libicu-dev libxml2-dev python3-icu python3-aeidon gettext intltool 
itstool yelp-tools yelp-xsl gnome-doc-utils python3-libxml2
   - pip install -r requirements.txt
 
 pages:
@@ -70,4 +70,4 @@ linter:
       when: manual
     # Otherwise, always run job.
     - when: always
-      allow_failure: true
\ No newline at end of file
+      allow_failure: true