CMakeLists: Remove version specifier for lz4

Currently the exported version of lz4 provided by vcpkg is malformed and
is "unknown". This makes querying for a specific version broken.

Fixes configuring CMake with the use of vcpkg.

CMakeLists.txt

@@ -202,7 +202,7 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
 find_package(enet 1.3)
 find_package(fmt 9 REQUIRED)
 find_package(inih)
-find_package(lz4 1.8 REQUIRED)
+find_package(lz4 REQUIRED)
 find_package(nlohmann_json 3.8 REQUIRED)
 find_package(Opus 1.3)
 find_package(Vulkan 1.3.213)