jobs/templates/swh-cypress: Ensure to use latest pip version
This ensures the manylinux2010
platform tag for linux binary wheels is supported
and thus avoid error when outdated pip tries to compile confluent_kafka
binary
module (see https://forge.softwareheritage.org/swh/devel/swh-web!219).
Migrated from D2450 (view on Phabricator)