Add DbGate ZIP Slip fix commit

[cookesan]

Adds DbGate ZIP Slip fix commit to GHSA-h535-j5hr-mv56.

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-h535-j5hr-mv56/GHSA-h535-j5hr-mv56.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 the DbGate ZIP Slip fix commit reference; it does not change affected ranges, package metadata, or severity.
• The added commit resolves to 1ac0aa8a3e4c91d1abce42572accecaddbb8b92d.
• The commit subject matches the advisory context: Add path traversal and null byte checks for archive names and ZIP entries.

No other advisory fields are changed.