Update deepdiff requirement from ^5.2.3 to >=5.2.3,<7.0.0

Updates the requirements on [deepdiff](https://github.com/seperman/deepdiff) to permit the latest version.
- [Release notes](https://github.com/seperman/deepdiff/releases)
- [Changelog](https://github.com/seperman/deepdiff/blob/master/docs/changelog.rst)
- [Commits](seperman/deepdiff@5.2.3...6.2.3)

---
updated-dependencies:
- dependency-name: deepdiff
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -54,7 +54,7 @@ darglint = "^1.5.7"
 pytest-cov = "^4.0.0"
 pylint = "^2.6.0"
 sphinx-argparse = "^0.3.0"
-deepdiff = "^5.2.3"
+deepdiff = ">=5.2.3,<7.0.0"
 safety = "^2.0.0"
 readme-renderer = "^34.0"
 pygount = "^1.2.4"