Bugfixes:
- #2847 : follow up bugfix for malformed previous values in subscription results for delete events
- #2536, #2906: deploy got stuck when renaming a relation
- #2793: perform detection of duplicate types and fields in a case insensitive way
- #3198: changing the type of a required scalar field must error if there are nodes
- #2953: Fixed a bug where Cascading Delete would fail if more than 32768 nodes in one table where affected.
- #2927: changing an optional field to required ignored casing and crashed
- #2871 #3239 : make schema validation more resilient and do not crash when encountering unexpected errors