package/dovecot: bump version to 2.3.7.1

Release notes:
https://dovecot.org/pipermail/dovecot/2019-July/116622.html

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/dovecot/dovecot.hash

@@ -1,5 +1,5 @@
 # Locally computed after checking signature
-sha256 11e156ae8539e42892809cc2412c3f1a294188806969f5547191a43abd4083aa  dovecot-2.3.7.tar.gz
+sha256 c5a51d6f76e6e9c843df69e52a364a4c65c4c60e0c51d992eaa45f22f71803c3  dovecot-2.3.7.1.tar.gz
 sha256 a363b132e494f662d98c820d1481297e6ae72f194c2c91b6c39e1518b86240a8  COPYING
 sha256 dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING.LGPL
 sha256 52b8c95fabb19575281874b661ef7968ea47e8f5d74ba0dd40ce512e52b3fc97  COPYING.MIT

package/dovecot/dovecot.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 DOVECOT_VERSION_MAJOR = 2.3
-DOVECOT_VERSION = $(DOVECOT_VERSION_MAJOR).7
+DOVECOT_VERSION = $(DOVECOT_VERSION_MAJOR).7.1
 DOVECOT_SITE = https://dovecot.org/releases/$(DOVECOT_VERSION_MAJOR)
 DOVECOT_INSTALL_STAGING = YES
 DOVECOT_LICENSE = LGPL-2.1, MIT, Public Domain, BSD-3-Clause, Unicode-DFS-2015