Feature: Upgrade Mash to v1.7.0

[chang-annie]

Description

Currently, we explicitly exclude the org.apache.poi:poi-ooxml dependency (flagged with CVE-2025-31672) from org.technologybrewery.mash:mash-core 1.6.0. Once Mash Issue #4 is completed and a new version is released, we should upgrade to use it.

DOD

Acceptance criteria required to realize the requested feature

• Using checkboxes helps to communicate progress

Test Strategy/Script

How will this feature be verified?

References/Additional Context

Dependent on Mash Issue #4