Merged PR 440: #2620: add nbmake and pytest xdist to run the notebooks as part of pieline

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## Summary
Added nbmake so that the pytest can be used to run the notebooks in primaite as part of the pipeline

## Test process
n/a

## Checklist
- [X] PR is linked to a **work item**
- [X] **acceptance criteria** of linked ticket are met
- [X] performed **self-review** of the code
- [ ] written **tests** for any new functionality added with this PR
- [ ] updated the **documentation** if this PR changes or adds functionality
- [ ] written/updated **design docs** if this PR implements new functionality
- [ ] updated the **change log**
- [X] ran **pre-commit** checks for code style
- [ ] attended to any **TO-DOs** left in the code

#2620: add nbmake and pytest xdist to run the notebooks as part of pieline

Related work items: #2620

src/primaite/notebooks/multi-processing.ipynb

@@ -143,7 +143,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.10.11"
   }
  },
  "nbformat": 4,