force uninstall deepdiff to install the dev version (not dynamically versioned)

[zacharyburnett]

This PR addresses the issue where, since deepdiff is not dynamically versioned (and thus does not have dev versions e.g. 6.5.0.dev12), attempting to install the latest commit of deepdiff will fail if a wheel of deepdiff is already installed. As the Jenkins build workflow does not include support for the --ignore-installed option to pip install, this uninstalls the existing deepdiff installation to overwrite with the development version.

Checklist

• added entry in CHANGES.rst under the corresponding subsection
• updated relevant tests
• updated relevant documentation
• updated relevant milestone(s)
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below. How to run regression tests on a PR

[zacharyburnett]

regtest running at https://plwishmaster.stsci.edu:8081/blue/organizations/jenkins/RT%2FRoman-Developers-Pull-Requests/detail/Roman-Developers-Pull-Requests/382/pipeline

https://plwishmaster.stsci.edu:8081/blue/organizations/jenkins/RT%2FRoman-devdeps/detail/Roman-devdeps/399/pipeline/

[codecov]

Codecov Report

All modified lines are covered by tests ✅

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