[#3558] Add an extra `identifier` field to account for analytics #10066

Job	Run time
Set up docker build 'dynamic' env variables	1s
Run the Django test suite	10m 41s
End-to-end tests, chromium	8m 48s
Build and check documentation	2m 1s
End-to-end tests, firefox	10m 11s
End-to-end tests, webkit	9m 28s
Run the Django test suite in reverse	7m 56s
docker_build (production) / Build image	7m 32s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	7m 27s
Scan docker image	2m 4s
Check for unexepected OAS changes	5s
Generate SDKs from OAS	31s
Generate Postman collection from OAS	15s
Validate OAS	34s
Push Docker image	0s
update-docker-readme	0s
	1h 7m 34s

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