[breaking-change] Undocumented breaking changes detected (2026-05-28)

Recent commits introduced a breaking change that appears undocumented.

## Breaking Changes

### 1. `osquery_manager` raised minimum Kibana requirement without migration note
**Commit(s):** [7000d19311](https://github.com/elastic/integrations/commit/7000d19311bdfb9935cc357844a3c19ebfaff35e)
**PR:** [#18989](https://github.com/elastic/integrations/pull/18989)
**What broke:** `osquery_manager` compatibility changed from Kibana `^9.4.0` to `^9.4.2`, which drops support for 9.4.0 and 9.4.1. Consumers pinned to those versions can no longer use package `1.29.0`.
**Evidence:**
- `packages/osquery_manager/manifest.yml` changed:
- `conditions.kibana.version: "^9.4.0"` → `"^9.4.2"`
- `packages/osquery_manager/changelog.yml` for `1.29.0` only mentions ECS mapping generation and osquery 5.23.0 upgrade; no compatibility break or migration guidance.
**Why undocumented:** PR title/body/comments and the package changelog do not document the Kibana floor increase or provide migration guidance for users on 9.4.0/9.4.1.
**Suggested fix:** Add explicit release note/changelog text documenting the minimum Kibana version increase and migration guidance for affected users.

## Suggested Actions
- [ ] Document the Kibana version floor increase (`^9.4.0` → `^9.4.2`) in release notes/changelog
- [ ] Add migration guidance for users on Kibana 9.4.0/9.4.1

> [!NOTE]
>
> 🔒 Integrity filter blocked 3 items
>
> The following items were blocked because they don't meet the GitHub integrity level.
>
> - [#19232](https://github.com/elastic/integrations/pull/19232) `search_pull_requests`: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
> - [#19254](https://github.com/elastic/integrations/pull/19254) `search_pull_requests`: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
> - [#18989](https://github.com/elastic/integrations/pull/18989) `search_pull_requests`: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".
>
> To allow these resources, lower `min-integrity` in your GitHub frontmatter:
>
> ```yaml
> tools:
> github:
> min-integrity: approved # merged | approved | unapproved | none
> ```
>
>

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