The easiest thing to do is to go into developer.apple.com, choose the expiring provisioning profile, choose EDIT, then Generate.
It will create a new one for you, and you will need to refresh Xcode's stash of provisioning profiles before you re-build. However, if the app is already out to your "workforce" you will need to redistribute to your users
From Apple's documentation :
Managing Expiring Certificates and Provisioning Profiles
You are responsible for managing your team’s certificates and provisioning profiles. Apple Developer Enterprise Program certificates expire after three years and provisioning profiles expire after one year.
Before a distribution certificate expires, create an additional distribution certificate, described in Creating Additional Enterprise Distribution Certificates. You cannot renew an expired certificate. Instead, replace the expired certificate with the new certificate, described in Replacing Expired Certificates.
If a distribution provisioning profile expires, verify that you have a valid distribution certificate and renew the provisioning profile, described in Renewing Expired Provisioning Profiles.
Xcode manages your development certificates and team provisioning profiles for you.