package/libcurl: bump to version 7.71.1

This release fixes build with BR2_PACKAGE_LIBCURL_PROXY_SUPPORT disabled
and mbedtls enabled.

Add reference to upstream tarball signature.

Fixes:
http://autobuild.buildroot.net/results/f32b6ab927560839cacaa1b9e6b64ced92b9ffe3/
http://autobuild.buildroot.net/results/566f0db496f6d1feefd9d3e6b6955a2539670735/
http://autobuild.buildroot.net/results/19de1111318aea863118c9b0b44dc282f011918f/

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8360886fb2d983fb3324a352531b19289fe4e8f3)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libcurl/libcurl.hash

@@ -1,3 +1,5 @@
-# Locally calculated
+# Locally calculated after checking pgp signature
+# https://curl.haxx.se/download/curl-7.71.1.tar.xz.asc
+# signed with key 27EDEAF22F3ABCEB50DB9A125CC908FDB71E12C2
+sha256  40f83eda27cdbeb25cd4da48cefb639af1b9395d6026d2da1825bf059239658c  curl-7.71.1.tar.xz
 sha256  db3c4a3b3695a0f317a0c5176acd2f656d18abc45b3ee78e50935a78eb1e132e  COPYING
-sha256  cdf18794393d8bead915312708a9e5d819c6e9919de14b20d5c8e7987abd9772  curl-7.71.0.tar.xz

package/libcurl/libcurl.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBCURL_VERSION = 7.71.0
+LIBCURL_VERSION = 7.71.1
 LIBCURL_SOURCE = curl-$(LIBCURL_VERSION).tar.xz
 LIBCURL_SITE = https://curl.haxx.se/download
 LIBCURL_DEPENDENCIES = host-pkgconf \