chore(docs): update of OEL changelog

[ory-bot]

Update OEL changelog

Summary by CodeRabbit

• Bug Fixes
  • Improved email and username identifier handling by removing invisible characters and normalizing case and width variations to ensure consistent processing across the platform.
  • Fixed SCIM Group attribute filtering that previously caused HTTP 500 errors when querying groups with specific filter parameters, restoring full functionality.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 4cf76cc9-5696-49cd-a7ad-97286152bdee

📥 Commits

Reviewing files that changed from the base of the PR and between aa45903 and 27a6959.

📒 Files selected for processing (5)

• docs/self-hosted/oel/keto/changelog/v26.2.15.md
• docs/self-hosted/oel/kratos/changelog/v26.2.15.md
• docs/self-hosted/oel/oathkeeper/changelog/v26.2.15.md
• docs/self-hosted/oel/oauth2/changelog/v26.2.15.md
• docs/self-hosted/oel/polis/changelog/v26.2.15.md

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📝 Walkthrough

Walkthrough

This PR adds v26.2.15 changelog documentation across five Ory platform components. Kratos includes documented fixes for identifier normalization and SCIM Group filtering, while Keto, Oathkeeper, OAuth2, and Polis record having no changes in this release.

Changes

v26.2.15 Release Changelog

Layer / File(s)	Summary
Kratos release fixes documentation docs/self-hosted/oel/kratos/changelog/v26.2.15.md	Two fixes documented: (1) email/username identifier normalization that strips invisible characters and applies case/width normalization while preserving cross-script distinctions; (2) SCIM Group attributes=... filtering correction that resolves HTTP 500 panic on filtered GET requests.
Empty component changelog entries docs/self-hosted/oel/keto/changelog/v26.2.15.md, docs/self-hosted/oel/oathkeeper/changelog/v26.2.15.md, docs/self-hosted/oel/oauth2/changelog/v26.2.15.md, docs/self-hosted/oel/polis/changelog/v26.2.15.md	Placeholder documentation indicating no changelog entries for Keto, Oathkeeper, OAuth2, and Polis components in v26.2.15.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested reviewers

• aeneasr
• vinckr
• unatasha8

Poem

🐰 The changelog hops from version to version true,
Five components record what's new—or not in v26.2.15's queue!
Kratos fixes normalization with care so fine,
While others rest content on this release line. ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is minimal and vague, lacking required sections like issue reference, breaking changes explanation, and checklist items from the template.	Expand description to include: issue/design document link (or justification for documentation improvement), completed checklist items, and any relevant context about the changelog updates.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: updating OEL changelog files for version 26.2.15.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch oel-changelog-update

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