Add Fission router fix commit references

[cookesan]

Adds Fission router fix commit references to GHSA-3g33-6vg6-27m8.

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/2026/05/GHSA-3g33-6vg6-27m8/GHSA-3g33-6vg6-27m8.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]

Rechecked this reference-only PR while keeping the open Advisory Database queue current.

• The patch only adds two Fission fix commit references; it does not change affected ranges, package metadata, or severity.
• Both commits resolve in fission/fission.
• The commit subjects cover the NetworkPolicy and HMAC-auth hardening relevant to the advisory summary.

No other advisory fields are changed.