Caution about mvn deploy causing cache to increase

See merge request !98730



Merged-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Approved-by: rossfuhrman <rfuhrman@gitlab.com>
Approved-by: Nikola Milojevic <nmilojevic@gitlab.com>
Approved-by: Hordur Freyr Yngvason <hfyngvason@gitlab.com>
Co-authored-by: Mike Lockhart <mlockhart@gitlab.com>