bin/ci/gitlab_gql: use venv wrapper

Signed-off-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24367>

bin/ci/gitlab_gql.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -eu
+
+this_dir=$(dirname -- "$(readlink -f -- "${BASH_SOURCE[0]}")")
+readonly this_dir
+
+exec \
+  "$this_dir/../python-venv.sh" \
+  "$this_dir/requirements.txt" \
+  "$this_dir/gitlab_gql.py" "$@"