package/gnutls: security bump to 3.6.13
Fixes the following security issue:
* CVE-2020-11501: It was found that GnuTLS 3.6.3 introduced a
regression in the DTLS protocol implementation. This caused the DTLS
client to not contribute any randomness to the DTLS negotiation
breaking the security guarantees of the DTLS protocol.
Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 170d06cfc629ec3526e196f767969fb29ba890e0)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>