Add Gogs advisory references

[cookesan]

Adds Gogs advisory references to GHSA-vm62-9jw3-c8w3.

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/2024/12/GHSA-vm62-9jw3-c8w3/GHSA-vm62-9jw3-c8w3.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 Gogs fix pull request and commit references; it does not change affected ranges, package metadata, or severity.
• Pull request gogs/gogs#7868 is merged, and the added commit resolves to f5262441a0d7a1f621786d81cc1108dbc772974b.
• The commit subject matches the advisory context: ssh: make env command a passthrough (#7868).

No other advisory fields are changed.