hunter: zstd cmake improvements

CMakeLists.txt

@@ -622,10 +622,14 @@ set(HAVE_ZSTD OFF)
 if(CURL_ZSTD)
   hunter_add_package(zstd)
   if(HUNTER_ENABLED)
-    find_package(zstd REQUIRED)
+    find_package(zstd CONFIG REQUIRED)
     if(Zstd_FOUND AND NOT Zstd_VERSION VERSION_LESS "1.0.0")
       set(HAVE_ZSTD ON)
-      list(APPEND CURL_LIBS zstd::libzstd_static)
+      if(TARGET zstd::libzstd_static)
+        list(APPEND CURL_LIBS zstd::libzstd_static)
+      else()
+        list(APPEND CURL_LIBS zstd::libzstd_shared)
+      endif()
       include_directories(${ZSTD_INCLUDE_DIRS})
     else()
       message(WARNING "zstd v1.0.0 or newer is required, disabling zstd support.")