ci: add moreutils to lint job

Makes the sponge utility available for an upcoming scripted-diff.

ci/lint/01_install.sh

@@ -18,7 +18,8 @@ ${CI_RETRY_EXE} apt-get update
 # - curl/xz-utils (to install shellcheck)
 # - git (used in many lint scripts)
 # - gpg (used by verify-commits)
-${CI_RETRY_EXE} apt-get install -y cargo curl xz-utils git gpg
+# - moreutils (used by scripted-diff)
+${CI_RETRY_EXE} apt-get install -y cargo curl xz-utils git gpg moreutils
 
 PYTHON_PATH="/python_build"
 if [ ! -d "${PYTHON_PATH}/bin" ]; then