package/libcpprestsdk: bump to version 2.0.18

https://github.com/microsoft/cpprestsdk/releases/tag/2.10.18
https://github.com/microsoft/cpprestsdk/releases/tag/2.10.17

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libcpprestsdk/libcpprestsdk.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  3d75e17c7d79131320438f2a15331f7ca6281c38c0e2daa27f051e290eeb8681  libcpprestsdk-2.10.16.tar.gz
+sha256  6bd74a637ff182144b6a4271227ea8b6b3ea92389f88b25b215e6f94fd4d41cb  libcpprestsdk-2.10.18.tar.gz
 sha256  5c191789f502ac87df83b57008d2fc3e47fbf31315381b5bc4309f6602d0fe97  license.txt

package/libcpprestsdk/libcpprestsdk.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-LIBCPPRESTSDK_VERSION = 2.10.16
-LIBCPPRESTSDK_SITE = $(call github,Microsoft,cpprestsdk,v$(LIBCPPRESTSDK_VERSION))
+LIBCPPRESTSDK_VERSION = 2.10.18
+LIBCPPRESTSDK_SITE = $(call github,Microsoft,cpprestsdk,$(LIBCPPRESTSDK_VERSION))
 LIBCPPRESTSDK_LICENSE = MIT
 LIBCPPRESTSDK_LICENSE_FILES = license.txt
 LIBCPPRESTSDK_SUBDIR = Release