package/protobuf: bump to version 3.5.1

GRPC requires protobuf 3.5.0+

Signed-off-by: Martijn de Gouw <martijn.de.gouw@prodrive-technologies.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/protobuf/protobuf.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 2bb34b4a8211a30d12ef29fd8660995023d119c99fbab2e5fe46f17528c9cc78 protobuf-cpp-3.4.1.tar.gz
+sha256 c28dba8782da2cfea1e11c61d335958c31a9c1bc553063546af9cbe98f204092 protobuf-cpp-3.5.1.tar.gz

package/protobuf/protobuf.mk

@@ -7,7 +7,7 @@
 # When bumping this package, make sure to also verify if the
 # python-protobuf package still works, as they share the same
 # version/site variables.
-PROTOBUF_VERSION = 3.4.1
+PROTOBUF_VERSION = 3.5.1
 PROTOBUF_SOURCE = protobuf-cpp-$(PROTOBUF_VERSION).tar.gz
 PROTOBUF_SITE = https://github.com/google/protobuf/releases/download/v$(PROTOBUF_VERSION)
 PROTOBUF_LICENSE = BSD-3-Clause

package/python-protobuf/python-protobuf.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 1faa722cf475c8e4c43ddb393d6f1477f1a56c93be38a1c8e367c358db476b5f protobuf-python-3.4.1.tar.gz
+sha256 13d3c15ebfad8c28bee203dd4a0f6e600d2a7d2243bac8b5d0e517466500fcae protobuf-python-3.5.1.tar.gz