Migrate Nginx importer to advisory V2

[ziadhany]

Issue:

• Migrate nginx importer #2106

[ziadhany]

INFO 2026-01-09 19:24:01.299976 UTC Pipeline [NginxImporterPipeline] starting
INFO 2026-01-09 19:24:01.300113 UTC Step [fetch] starting
INFO 2026-01-09 19:24:01.300164 UTC Fetch `https://nginx.org/en/security_advisories.html`
Importing data using nginx_importer_v2
INFO 2026-01-09 19:24:01.984131 UTC Step [fetch] completed in 1 seconds
INFO 2026-01-09 19:24:01.984463 UTC Step [collect_and_store_advisories] starting
INFO 2026-01-09 19:24:01.984621 UTC Collecting 42 advisories
INFO 2026-01-09 19:24:02.131638 UTC Progress: 11% (5/42) ETA: 1 seconds
INFO 2026-01-09 19:24:02.188800 UTC Progress: 21% (9/42) ETA: 1 seconds
INFO 2026-01-09 19:24:02.278046 UTC Progress: 33% (14/42) ETA: 1 seconds
INFO 2026-01-09 19:24:02.350020 UTC Progress: 45% (19/42)
INFO 2026-01-09 19:24:02.433167 UTC Progress: 57% (24/42)
INFO 2026-01-09 19:24:02.518782 UTC Progress: 69% (29/42)
INFO 2026-01-09 19:24:02.613294 UTC Progress: 80% (34/42)
Invalid vulnerable range none
INFO 2026-01-09 19:24:02.666446 UTC Progress: 90% (38/42)
INFO 2026-01-09 19:24:02.723448 UTC Progress: 100% (42/42)
INFO 2026-01-09 19:24:02.740121 UTC Successfully collected 42 advisories
INFO 2026-01-09 19:24:02.740225 UTC Step [collect_and_store_advisories] completed in 1 seconds
INFO 2026-01-09 19:24:02.740280 UTC Pipeline completed in 1 seconds

Process finished with exit code 0

from vulnerabilities.models import AdvisoryV2
from django.db.models import Count
duplicates = (
    AdvisoryV2.objects
    .values('avid')
    .annotate(count=Count('id'))
    .filter(count__gt=1)
)
len(duplicates)
Out[5]: 0
AdvisoryV2.objects.count()
Out[6]: 42