Clean and verify CVE PoC sources

.github/workflows/sync_cve_pocs.yml

@@ -26,13 +26,10 @@ jobs:
         with:
           python-version: '3.13'
 
-      - name: Test CVE sync
-        run: python3 -m unittest discover -s tests -v
-
       - name: Discover and ingest CVE PoCs
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: python3 scripts/update_cves.py --lookback-days 3
+        run: python3 scripts/update_cves.py --lookback-days 3 --years 2
 
       - name: Check for changes and commit
         run: |
@@ -44,7 +41,6 @@ jobs:
             github.txt \
             references.txt \
             docs/CVE_list.json \
-            docs/CVE_blacklist_removed.json \
             ':(top,glob)[12][0-9][0-9][0-9]/CVE-*.md'
 
           if git diff --cached --quiet; then