[#4009] Clean up usage of merged data #11824

Job	Run time
Set up docker build 'dynamic' env variables	1s
Build and check documentation	1m 41s
End-to-end tests, chromium	11m 37s
Run the Django test suite	7m 23s
Run the Django test suite in reverse	6m 2s
End-to-end tests, firefox	14m 4s
End-to-end tests, webkit	11m 57s
docker_build (production) / Build image	6m 55s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	7m 26s
Check for unexepected OAS changes	7s
Validate OAS	17s
Generate Postman collection from OAS	12s
Generate SDKs from OAS	34s
Scan docker image	2m 19s
Push Docker image	0s
update-docker-readme	0s
	1h 10m 35s

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