Update upgrading.md (#4937)
Update upgrading.md (#4937)

include the local_requirements.txt file to keep ldap from breaking during upgrades.

Co-authored-by: Jeremy Stretch <ad062265dd000c8d65122d4014ac646cf59b9439@networktocode.com>
digitalocean/netbox,digitalocean/netbox,digitalocean/netbox,digitalocean/netbox