Feature/4908 json registration backend #14941

Job	Run time
Run the Django test suite	8m 37s
Set up docker build 'dynamic' env variables	1s
Build and check documentation	3m 44s
End-to-end tests, chromium	15m 21s
End-to-end tests, firefox	19m 58s
Run the Django test suite in reverse	5m 36s
End-to-end tests, webkit	12m 9s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 35s
docker_build (production) / Build image	2m 46s
Simulate upgrading instances (2.7.4)	1m 21s
Scan docker image	2m 5s
Simulate upgrading instances (2.7.8)	1m 22s
Check for unexepected OAS changes	0s
Generate Postman collection from OAS	0s
Validate OAS	0s
Generate SDKs from OAS	0s
Push Docker image	0s
update-docker-readme	0s
	1h 15m 35s

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