Update internal curl to 7.54.0

Makefile

@@ -625,9 +625,9 @@ ifdef MINGW
       ifeq ($(USE_LOCAL_HEADERS),1)
         CLIENT_CFLAGS += -DCURL_STATICLIB
         ifeq ($(ARCH),x86_64)
-          CLIENT_LIBS += $(LIBSDIR)/win64/libcurl.a
+          CLIENT_LIBS += $(LIBSDIR)/win64/libcurl.a -lcrypt32
         else
-          CLIENT_LIBS += $(LIBSDIR)/win32/libcurl.a
+          CLIENT_LIBS += $(LIBSDIR)/win32/libcurl.a -lcrypt32
         endif
       else
         CLIENT_LIBS += $(CURL_LIBS)