Backport PDF when submissions need to be cosigned #14514

Job	Run time
Run the Django test suite	7m 34s
Run the Django test suite in reverse	5m 37s
Set up docker build 'dynamic' env variables	1s
Build and check documentation	2m 53s
End-to-end tests, chromium	13m 33s
End-to-end tests, firefox	16m 39s
End-to-end tests, webkit	11m 49s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 53s
docker_build (production) / Build image	3m 0s
Scan docker image	2m 10s
Simulate upgrading instances (2.7.4)	1m 19s
Simulate upgrading instances (2.7.8)	1m 18s
Check for unexepected OAS changes	0s
Generate Postman collection from OAS	0s
Generate SDKs from OAS	0s
Validate OAS	0s
Push Docker image	0s
update-docker-readme	0s
	1h 8m 46s

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