chore(airflow): Update container images ahead of Stackable Release 25.3.0

[NickLarsenNZ]

Part of #964.

• Add: 2.10.4
• Remove: 2.9.2, 2.10.2

### Update tasks
- [x] Update `versions.py` to reflect the agreed upon versions in the spreadsheet (including the removal of old versions).
- [x] Download new constraints file (see `airflow/download_constraints.sh`).
- [x] Update other dependencies if applicable (eg: python, statsd_exporter, etc).
- [x] Check other operators (getting_started / kuttl / supported-versions) for usage of the versions. Add the PR(s) to the list below.
- [x] Update the version in demos. Add the PR(s) to the list below.

### Related Pull Requests
- [ ] https://github.com/stackabletech/docker-images/pull/1021
- [ ] https://github.com/stackabletech/airflow-operator/pull/594
- [ ] https://github.com/stackabletech/demos/pull/164

Tip

Delete any items that do not apply so that all applicable items can be checked.
For example, if you add release notes to the documentation repository, you do not need the latter two criteria.

This list should be completed by the assignee(s), once respective PRs have been merged. Once all items have been checked, the issue can be moved into Development: Done.

### Acceptance
- [x] Can build image (either locally, or in CI)
- [x] Kuttl smoke tests passes (either locally, or in CI)
- [x] ~Release notes written in a comment below~ Nothing needed
- [x] Applicable `release-note` label added to this issue

Testing instructions

# See the latest version at https://pypi.org/project/image-tools-stackabletech/
pip install image-tools-stackabletech==0.0.13

bake --product airflow=x.y.z # where x.y.z is the new version added in this PR

kind load docker-image oci.stackable.tech/sdp/airflow:x.y.z-stackable0.0.0-dev

# Change directory into the airflow-operator repository and update the
# product version in tests/test-definition.yaml
./scripts/run-tests --test-suite smoke-latest # or similar

Please consider updating this template if these instructions are wrong, or
could be made clearer.

[NickLarsenNZ]

Running smoke tests for 2.10.4.

[NickLarsenNZ]

Tests pass

--- PASS: kuttl (548.88s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/smoke_airflow-2.10.4_openshift-false_executor-celery (337.97s)
        --- PASS: kuttl/harness/smoke_airflow-2.10.4_openshift-false_executor-kubernetes (210.91s)
PASS