Add parse-server login timing advisory references

[cookesan]

Adds parse-server login timing advisory references to GHSA-mmpq-5hcv-hf2v.

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/2026/04/GHSA-mmpq-5hcv-hf2v/GHSA-mmpq-5hcv-hf2v.json), JSON parses, git diff --check passes, and the exact-head worktree is clean.
• Revalidated the added public references 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.

Adds direct commit and release references for GHSA-mmpq-5hcv-hf2v in both Parse Server release lines. The advisory already references NVD, upstream PR #10398, upstream PR #10399, and package source; this PR links each merged fix to its fixed release.

Current audit, July 8, 2026:

• GHSA-mmpq-5hcv-hf2v is live and not withdrawn.
• CVE-2026-39321 resolves in NVD with Analyzed status.
• PR #10398 merged to alpha as commit 531b9ab6dda4268ede365367fcdc6d98e737ccc3; release 9.8.0-alpha.6 is published, marked prerelease, and not marked draft.
• PR #10399 merged to release-8.x.x as commit 1be6c97494ab31cb93107c501d619c4f8b7d8e56; release 8.6.74 is published and not marked draft or prerelease.
• npm parse-server 9.8.0-alpha.6 and 8.6.74 both resolve with package tarball and integrity metadata.
• Local JSON validation and whitespace checks pass, and the diff only changes this advisory.

No advisory data fields are changed.