[gimp/wip/Jehan/pygtk-4-distcheck] Force building for Python2.

[Jehan <jehanp src gnome org>]

commit f384cf7a7057b54a55f2365ddacacea48bd29ad5
Author: Jehan <jehan girinstud io>
Date:   Sun Aug 2 18:29:35 2020 +0200

    Force building for Python2.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 90a4b773c1..f2a2c8e086 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -153,6 +153,7 @@ gimp-debian/testing-autotools-distcheck:
     - wget https://download.gnome.org/sources/pygobject/2.28/pygobject-2.28.7.tar.xz
     - wget https://download.gnome.org/sources/pygtk/2.24/pygtk-2.24.0.tar.gz
     - sha256sum -c deps.sha256sum
+    - export PYTHON=/usr/bin/python2
     - tar xf pygobject-2.28.7.tar.xz
     - cd pygobject-2.28.7/
     - ./configure --prefix="${INSTALL_PREFIX}" && make && make install