install: temporary limit dependencies
install: temporary limit dependencies

* Limits temporarily the highest version limit of
  invenio-search as a new version including a fix
  needs to be released.

Signed-off-by: Nicolas Harraudeau <b43b76f088452fbd97430e599a370977191b854c@cern.ch>

inveniosoftware/invenio-stats,inveniosoftware/invenio-stats