dagster: add new latest version provider in conftest

[JDarDagran]

Problem

30 minutes from now new version of Dagster was released. It breaks tests with latest version.

Solution

Add new provider for latest version as advised in docstrings.

Checklist

• You've signed-off your work
• Your pull request title follows our guidelines
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• Your comment includes a one-liner for the changelog about the specific purpose of the change (if necessary)
• You've versioned the core OpenLineage model or facets according to SchemaVer (if relevant)
• You've added a header to source files (if relevant)

---

SPDX-License-Identifier: Apache-2.0
Copyright 2018-2023 contributors to the OpenLineage project

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (c3765bf) to head (a4df366).

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Additional details and impacted files

@@             Coverage Diff              @@
##             main     #2518       +/-   ##
============================================
+ Coverage   84.47%   100.00%   +15.52%     
============================================
  Files          59         5       -54     
  Lines        3355       173     -3182     
============================================
- Hits         2834       173     -2661     
+ Misses        521         0      -521     

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