package/tiff: ignore CVE-2025-8851

The CVE-2025-8851 [1] has been fixed in upstream commit [2] that is part
of the v4.7.0 release.

Because the NVD reference includes the version '<2024-08-11' most of CVE
checker will fail to compare it against 4.7.0 and report it as a
positive.

[1] https://nvd.nist.gov//vuln/detail/CVE-2025-8851
[2] https://gitlab.com/libtiff/libtiff/-/commit/8a7a48d7a645992ca83062b3a1873c951661e2b3

Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/tiff/tiff.mk

@@ -19,6 +19,9 @@ TIFF_IGNORE_CVES += CVE-2025-8176
 # 0004-fix-for-thumbnail-issue.patch
 TIFF_IGNORE_CVES += CVE-2025-8177
 
+# Fixed in 4.7.0
+TIFF_IGNORE_CVES += CVE-2025-8851
+
 # webp has a (optional) dependency on tiff, so we can't have webp
 # support in tiff, or that would create a circular dependency.
 TIFF_CONF_OPTS = \