Add Open WebUI OAuth picture fix references

[cookesan]

Adds Open WebUI OAuth picture fix references to GHSA-226f-f24g-524w.

Audit refresh, July 8, 2026:

• Confirmed the live PR is open, ready for review, merge-clean, and the visible advisory check is green.
• Rechecked the merge-base diff: exactly one advisory JSON file changes (advisories/github-reviewed/2026/06/GHSA-226f-f24g-524w/GHSA-226f-f24g-524w.json), JSON parses, git diff --check passes, and the exact-head worktree is clean.
• Revalidated the added public references and package-version evidence in the diff; all resolve through their source site or registry.

[cookesan]

Review note: this expands GHSA-226f-f24g-524w with the upstream Open WebUI OAuth picture fix commit plus v0.9.6 tag and PyPI package evidence. I checked the PR head JSON against the OSV schema, confirmed commit d07fd7d6d85eeee0d4c2a45c01e1d1628081d0ab resolves to the OAuth picture redirect-following fix, confirmed the v0.9.6 tag URL resolves, and confirmed PyPI has open-webui==0.9.6; the affected PyPI range, CVSS score, alias, and package metadata stay unchanged.