ci: update pr template (#44)

update pr template

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,8 +1,5 @@
 Checklist:
 
-* [ ] I have bumped the chart version according to [versioning](https://github.com/kubeshop/testkube-cloud-charts/blob/main/CONTRIBUTING.md#versioning)
-* [ ] I have updated & regenerated the documentation according to [documentation](https://github.com/kubeshop/testkube-cloud-charts/blob/main/CONTRIBUTING.md#documentation)
-* [ ] I have synced the testkube-enterprise chart according to [synchronization](https://github.com/kubeshop/testkube-cloud-charts/blob/main/CONTRIBUTING.md#synchronization)
 * [ ] Any new values are backwards compatible and/or have sensible default.
 * [ ] I have signed off all my commits as required by [DCO](https://github.com/kubeshop/testkube-cloud-charts/blob/master/community/CONTRIBUTING.md).
 * [ ] My CI is green.