Implement backend validation for formio datetime component #12482

Job	Run time
Set up docker build 'dynamic' env variables	1s
Build and check documentation	1m 4s
Run the Django test suite	7m 44s
Run the Django test suite in reverse	6m 2s
End-to-end tests, chromium	11m 31s
End-to-end tests, firefox	13m 47s
End-to-end tests, webkit	10m 56s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	5m 5s
docker_build (production) / Build image	5m 3s
Check for unexepected OAS changes	7s
Validate OAS	12s
Generate SDKs from OAS	33s
Generate Postman collection from OAS	13s
Scan docker image	2m 11s
Push Docker image	0s
update-docker-readme	0s
	1h 4m 29s

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