fix: define max version for pydicom to avoid breaking changes

[sammaxwellxyz]

Description

Related issues: #266 #266

define install requires to include upper bound for pydicom.

the preference may be for an update to adopt pydicom 3 but this may be a useful fix in the short term as that may introduce breaking changes

Checklist

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• My code follows the style guidelines of this project (i think)

Open questions

Questions that require more discussion or to be addressed in future development:

you may want a similar upper bound for numpy, accidentally adopting 2+ has been an issue for some

[vsoch]

Good thinking to get this in for a closer version (before we bump up). Could you please bump the version in deid/version.py and put a note in the changelog?

[vsoch]

@sammaxwellxyz looks like there is just a linting issue - we have it pinned to black 23.3.0, so either running that version or updating the pin (and running the version you choose on the codebase) would work here. Thanks!