Merge pull request #1840 from Giskard-AI/GSK-2409

GSK-2409 Add doc to how to update the lockfile

Author: kevinmessiaen

.github/PULL_REQUEST_TEMPLATE.md

@@ -23,6 +23,7 @@
 
 - [ ] I've read the [`CODE_OF_CONDUCT.md`](https://github.com/Giskard-AI/ai-inspector/blob/master/CODE_OF_CONDUCT.md) document.
 - [ ] I've read the [`CONTRIBUTING.md`](https://github.com/Giskard-AI/ai-inspector/blob/master/CONTRIBUTING.md) guide.
-- [ ] I've updated the code style using `make codestyle`.
 - [ ] I've written tests for all new methods and classes that I created.
 - [ ] I've written the docstring in Google format for all the methods and classes that I used.
+- [ ] I've updated the `pdm.lock` running `pdm update-lock` (only applicable when `pyproject.toml` has been
+  modified)