package/python-pymodbus: bump to version 3.6.8

License hash changed due to year range update:
https://github.com/pymodbus-dev/pymodbus/commit/131d30391efd9c64f1fec857ae0372746374e6d2

Drop no longer required python-six runtime dependency.

Drop no longer required python-serial runtime dependency.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-pymodbus/Config.in

@@ -1,8 +1,6 @@
 config BR2_PACKAGE_PYTHON_PYMODBUS
 	bool "python-pymodbus"
-	select BR2_PACKAGE_PYTHON_SIX # runtime
-	select BR2_PACKAGE_PYTHON_SERIAL # runtime
 	help
-	  Pymodbus is a full Modbus protocol implementation.
+	  A fully featured modbus protocol stack in python.
 
-	  https://github.com/riptideio/pymodbus
+	  https://github.com/pymodbus-dev/pymodbus/

package/python-pymodbus/python-pymodbus.hash

@@ -1,5 +1,5 @@
 # md5, sha256 from https://pypi.org/pypi/pymodbus/json
-md5  89da6585b27b8c4b3887eb9f7d1e950b  pymodbus-3.0.2.tar.gz
-sha256  704cb7fb90631c45f9c3a70b89d0c990fe0e208ac56f14a5c449e21bebd1e201  pymodbus-3.0.2.tar.gz
+md5  809260ecaaef548c7ac327755d7d2d25  pymodbus-3.6.8.tar.gz
+sha256  abb214716b56fc62bc0d5d9d964e2249439341746287e918d175f0e3ee241407  pymodbus-3.6.8.tar.gz
 # Locally computed sha256 checksums
-sha256  796a47993313691ea404d8af7e4c0f9daf1d2760e3900938985b59c9008eee2f  LICENSE
+sha256  47f904249172e795a6b32de91f471073297befffd74e17cafc288d348a55972e  LICENSE

package/python-pymodbus/python-pymodbus.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-PYTHON_PYMODBUS_VERSION = 3.0.2
+PYTHON_PYMODBUS_VERSION = 3.6.8
 PYTHON_PYMODBUS_SOURCE = pymodbus-$(PYTHON_PYMODBUS_VERSION).tar.gz
-PYTHON_PYMODBUS_SITE = https://files.pythonhosted.org/packages/94/f7/6149a1b107fa54378a7adec83db7cd3679bf02216a6f5c83b37f55335897
+PYTHON_PYMODBUS_SITE = https://files.pythonhosted.org/packages/62/c1/f18b090dcc45d34b6a0e3563acde71b407ef96a36fa965c508a84f755355
 PYTHON_PYMODBUS_SETUP_TYPE = setuptools
 PYTHON_PYMODBUS_LICENSE = BSD-3-Clause
 PYTHON_PYMODBUS_LICENSE_FILES = LICENSE