message: Add DCO in the bot's commits
diff: @@ -209,7 +209,7 @@ commitAndSendExternalPR() {
  sed -i.bk -e "s/<EMAIL>/$(git config user.email)/g" "${PR_EXTERNAL_TEMPLATE_FILE}"
  git checkout -b "${TARGET_BRANCH}"
  git add --all .
  - git commit -m "kubeapps: bump chart version to ${CHART_VERSION}"
  + git commit --signoff -m "kubeapps: bump chart version to ${CHART_VERSION}"
  # NOTE: This expects to have a loaded SSH key
  if [[ $(git ls-remote origin "${TARGET_BRANCH}" | wc -l) -eq 0 ]]; then
  git push -u origin "${TARGET_BRANCH}"
  @@ -242,7 +242,7 @@ commitAndSendInternalPR() {
  fi
  git checkout -b "${TARGET_BRANCH}"
  git add --all .
  - git commit -m "bump chart version to ${CHART_VERSION}"
  + git commit --signoff -m "bump chart version to ${CHART_VERSION}"
  # NOTE: This expects to have a loaded SSH key
  if [[ $(git ls-remote origin "${TARGET_BRANCH}" | wc -l) -eq 0 ]]; then
  git push -u origin "${TARGET_BRANCH}"
  