changelog: add v0.20260920.0 release notes

[berendt]

Summarizes the v0.20260920.0 release: OpenStack release detection
for collection deployments with automatic skipping of out-of-range
roles and a switch to valkey for OpenStack 2025.2+, plus expanded
SONiC E2E test coverage (breakout ports, LAG, BGP peering, EVPN/
VXLAN/multi-VRF, and full config_db table coverage gating). Fixes
include visible failure output for osism wait, clearer handling of
a missing Ansible Vault password, registration of the ceph-rgws
validator, and regenerated SONiC golden files against the shipped
base config. Also drops an obsolete BGP_NEIGHBOR_AF validator check
and updates several dependencies.

Generated with generate-changelog-input.sh using claude-sonnet-5.

[sourcery-ai]

Hey - I've found 1 issue

Prompt for AI Agents

Please address the comments from this code review:

## Individual Comments

### Comment 1
<location path="CHANGELOG.md" line_range="40" />
<code_context>
+- gitpython 3.1.61 → 3.1.62 (osism/python-osism#2687)
+- lucide-react 1.41.0 → 1.46.0 (osism/python-osism#2689, osism/python-osism#2690, osism/python-osism#2693, osism/python-osism#2697, osism/python-osism#2705)
+- fakeredis 2.37.1 → 2.38.0 (osism/python-osism#2691)
+- react and react-dom 19.2.8 → 19.3.0 (osism/python-osism#2692)
+- autoprefixer 10.5.5 → 10.6.0 (osism/python-osism#2694, osism/python-osism#2701)
+- boto3 1.43.88 → 1.43.92 (osism/python-osism#2696)
</code_context>
<issue_to_address>
**nitpick:** The dependency section omits the direct `@types/react-dom` update to 19.3.0, even though the lockfile contains that version and the previous release notes record `@types/react-dom` at 19.2.7; consumers cannot obtain a complete dependency-change inventory from this release note.

**Suggested fix:** Add an `@types/react-dom 19.2.7 → 19.3.0` dependency entry.

```suggestion
- react and react-dom 19.2.8 → 19.3.0 (osism/python-osism#2692)
- @types/react-dom 19.2.7 → 19.3.0
```
</issue_to_address>

Sourcery assessment

Approved.

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[sourcery-ai]

nitpick: The dependency section omits the direct @types/react-dom update to 19.3.0, even though the lockfile contains that version and the previous release notes record @types/react-dom at 19.2.7; consumers cannot obtain a complete dependency-change inventory from this release note.

Suggested fix: Add an @types/react-dom 19.2.7 → 19.3.0 dependency entry.

Suggested change

	- react and react-dom 19.2.8 → 19.3.0 (osism/python-osism#2692)
	- react and react-dom 19.2.8 → 19.3.0 (osism/python-osism#2692)
	- @types/react-dom 19.2.7 → 19.3.0