[BUGFIX] Pin CI image docker:20.10.14-dind

Latest docker:20.10-dind (currently 20.10.15)
triggers an error on CI:

Error response from daemon: failed to create shim task: OCI
runtime create failed: runc create failed: unable to start
container process: unable to apply cgroup configuration:
mkdir /sys/fs/cgroup/rdma/docker: permission denied: unknown

The image is the 'sub-container' in CI on runner hosts,
that runs all the test images like the php and database
images.

This error *may* have to do with sysbox, which is a security
layer on runner hosts to separate CI jobs from each other.
We however currently don't know exactly what is going on.

For the time being, we pin the dind image to its previous
verion docker:20.10.14-dind

Change-Id: Ie59be69680e1f444c115f2249ca8709bbfdd1e3e
Releases: main, 11.5, 10.4
Resolves: #97570
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/74543


Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>