package/nettle: bump to version 3.7.3

Bugfix release. From NEWS:

        This is bugfix release, fixing bugs that could make the RSA
        decryption functions crash on invalid inputs.

        Upgrading to the new version is strongly recommended. For
        applications that want to support older versions of Nettle,
        the bug can be worked around by adding a check that the RSA
        ciphertext is in the range 0 < ciphertext < n, before
        attempting to decrypt it.

https://lists.gnu.org/archive/html/info-gnu/2021-06/msg00002.html

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 2e5cb51680817b46ee8be39cb84a8d723c31f7e7)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/nettle/nettle.hash

@@ -1,6 +1,6 @@
 # Locally calculated after checking pgp signature
-# https://ftp.gnu.org/gnu/nettle/nettle-3.7.2.tar.gz.sig
-sha256  8d2a604ef1cde4cd5fb77e422531ea25ad064679ff0adf956e78b3352e0ef162  nettle-3.7.2.tar.gz
+# https://ftp.gnu.org/gnu/nettle/nettle-3.7.3.tar.gz.sig
+sha256  661f5eb03f048a3b924c3a8ad2515d4068e40f67e774e8a26827658007e3bcf0  nettle-3.7.3.tar.gz
 # Locally calculated
 sha256  a853c2ffec17057872340eee242ae4d96cbf2b520ae27d903e1b2fef1a5f9d1c  COPYING.LESSERv3
 sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYINGv2

package/nettle/nettle.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-NETTLE_VERSION = 3.7.2
+NETTLE_VERSION = 3.7.3
 NETTLE_SITE = http://www.lysator.liu.se/~nisse/archive
 NETTLE_DEPENDENCIES = gmp
 NETTLE_INSTALL_STAGING = YES