ci: Use sudo to run `meson install`

Newer meson versions no longer use polkit for automatic priviledge
elevation.

Commit d353f2d367 adjusted to that change by running `meson install`
through sudo, but left out the install-meson-project helper script.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2897>

diff --git a/.gitlab-ci/install-meson-project.sh b/.gitlab-ci/install-meson-project.sh
index 8ecf8a300d7e9839098d42c11cc8408cd961e524..6d1aa90c8a43afe908bb57ae999a15467041f694 100755 (executable)
--- a/.gitlab-ci/install-meson-project.sh
+++ b/.gitlab-ci/install-meson-project.sh
@@ -78,5 +78,5 @@ git clone --depth 1 "$REPO_URL" -b "$COMMIT" "$CHECKOUT_DIR"
 pushd "$CHECKOUT_DIR/$SUBDIR"
 sh -c "$PREPARE"
 meson setup --prefix=/usr _build "${MESON_OPTIONS[@]}"
-meson install -C _build
+sudo meson install -C _build
 popd