package/jbig2dec: add CVE trailer in patch

Since Buildroot commit [1] the patches that fixes a security
vulnerability needs to reference the fixed vulnerability.

This patch adds the relevant information to the patch header.

[1] 1167d0ff3d docs/manual: mention CVE trailer

Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/jbig2dec/0001-Bug-705041-jbig2dec-Avoid-uninitialized-allocator-in.patch

@@ -4,6 +4,7 @@ Date: Sun, 5 Nov 2023 12:21:52 +0100
 Subject: [PATCH] Bug 705041: jbig2dec: Avoid uninitialized allocator in
  command-line tool.
 
+CVE: CVE-2023-46361
 Upstream: https://github.com/ArtifexSoftware/jbig2dec/commit/ee53a7e4bc7819d32e8c0b2057885bcc97586bf3
 Signed-off-by: Raphaël Mélotte <raphael.melotte@mind.be>
 ---