F fix types for py3.8

Summary

For https://gitlab.indiscale.com/caosdb/customers/leibniz-zmt/management/-/issues/81. This is a fix for https://gitlab.com/caosdb/caosdb-pylib/-/issues/64.

Focus

Just uses Dict and List from typing.

Test Environment

Install a python3.8 interpreter and run tox.

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CHANGELOG.md

@@ -17,6 +17,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed ###
 
+* [#64](https://gitlab.com/caosdb/caosdb-pylib/-/issues/64) Use `Dict[]` and
+  `List[]` from `typing` for type hinting instead of `dict[]` and `list[]` for
+  compatibility with Python<3.9.
+
 ### Security ###
 
 ### Documentation ###