Update submodules

This is usually expected but can be turned off. Pipelines
that worked so far did so by accident (cached containers).

librem5-pipeline-definitions.yml

@@ -5,6 +5,7 @@ variables:
   L5_ADD_SCRATCH_CI: 'true'
   L5_WORKING_DIR: $CI_PROJECT_DIR/debian/output
   L5_LINTIAN_OPTS: --suppress-tags bad-distribution-in-changes-file
+  L5_GIT_SUBMODULE_UPDATE: 'true'
 
 .l5-build-debian-package:
   image: ${L5_DOCKER_IMAGE}
@@ -15,12 +16,13 @@ variables:
     - echo "man-db man-db/auto-update boolean false" | debconf-set-selections
     - export DEBIAN_FRONTEND=noninteractive
     - apt-get -y update
-    - '[ "$L5_ADD_SCRATCH_CI" != "true" ] || apt-get -y install build-essential wget ca-certificates gnupg'
+    - '[ "$L5_ADD_SCRATCH_CI" != "true" ] || apt-get -y install build-essential wget ca-certificates gnupg git'
     - '[ "$L5_ADD_SCRATCH_CI" != "true" ] || echo "deb http://ci.puri.sm/ scratch librem5" > /etc/apt/sources.list.d/ci.list'
     - '[ "$L5_ADD_SCRATCH_CI" != "true" ] || wget -O- https://ci.puri.sm/ci-repo.key | apt-key add -'
     - apt-get -y update
     - apt-get -y build-dep .
   script:
+    - '[ "$L5_GIT_SUBMODULE_UPDATE" != "true" ] || git submodule update --recursive'
     - dpkg-buildpackage -b -uc -us
     - rm -rf "${L5_WORKING_DIR}"; mkdir -p "${L5_WORKING_DIR}"
     - cp -l ../*.deb ../*.changes ../*.buildinfo "${L5_WORKING_DIR}/"