package/libmodbus: bump to version 3.1.11

Release notes:
https://github.com/stephane/libmodbus/releases/tag/v3.1.11

Signed-off-by: Scott Fan <fancp2007@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit dc9c4e05761fa850403c8c2c21e1bfbe719aecc2)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libmodbus/libmodbus.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  899be4e25ab7fe5799d43f9567510d6f063d2e8f56136dd726b6fd976f9b2253  libmodbus-3.1.10.tar.gz
+sha256  15b4b2e0f68122c2da9b195de5c330489a9c97d40b4a95d2822378dc14d780e7  libmodbus-3.1.11.tar.gz
 sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING.LESSER

package/libmodbus/libmodbus.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBMODBUS_VERSION = 3.1.10
+LIBMODBUS_VERSION = 3.1.11
 LIBMODBUS_SITE = https://github.com/stephane/libmodbus/releases/download/v$(LIBMODBUS_VERSION)
 LIBMODBUS_LICENSE = LGPL-2.1+
 LIBMODBUS_LICENSE_FILES = COPYING.LESSER