Add Weblate symlink fix references

[cookesan]

Adds Weblate symlink fix references to GHSA-g925-f788-4jh7.

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/2025/12/GHSA-g925-f788-4jh7/GHSA-g925-f788-4jh7.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]

Refreshed on July 8, 2026:

• GHSA-g925-f788-4jh7 and CVE-2025-68279 remain public and consistent with this advisory.
• Verified WeblateOrg/weblate PRs #17331 and #17356, commits 26d01e4697f79f108e7dcc4a658264850c6c0358 and bd460639ab143db2455160c9ddddb5480d9b92b5, release weblate-5.15.1, and PyPI Weblate 5.15.1.
• Local validation passed: jq empty and git diff --check.

No affected range, package, or severity changes are included.