CMakeLists: Update zstd to 1.4.5

Keeps the library version up to date.

CMakeLists.txt

@@ -167,7 +167,7 @@ macro(yuzu_find_packages)
         "lz4               1.8         lz4/1.9.2"
         "nlohmann_json     3.8         nlohmann_json/3.8.0"
         "ZLIB              1.2         zlib/1.2.11"
-        "zstd              1.4         zstd/1.4.4"
+        "zstd              1.4         zstd/1.4.5"
     )
 
     foreach(PACKAGE ${REQUIRED_LIBS})