Link to specified external library version

```
cmake_minimum_required(VERSION 3.10)

project(MetalTranslate)

include(ExternalProject)

set(EXTERNAL_INSTALL_LOCATION ${CMAKE_BINARY_DIR}/external)

# CTranslate2 External Project
ExternalProject_Add(CTranslate2
GIT_REPOSITORY https://github.com/OpenNMT/CTranslate2
GIT_TAG 4908b9d
CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION} -DWITH_MKL=OFF -DWITH_DNNL=ON
)

# Tokenizer External Project
ExternalProject_Add(Tokenizer
GIT_REPOSITORY https://github.com/OpenNMT/Tokenizer
GIT_TAG 559b8e7
CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${EXTERNAL_INSTALL_LOCATION}
)

# Include directories for CTranslate2 and Tokenizer
include_directories(${EXTERNAL_INSTALL_LOCATION}/include)
link_directories(${EXTERNAL_INSTALL_LOCATION}/lib)

# Ensure CTranslate2 and Tokenizer are built before metaltranslate
add_executable(metaltranslate src/main.cpp)

# Add the MetalTranslate sources
set(TARGET_H
src/MetalTranslate.h
src/MetalTranslateConfig.h)

target_sources(metaltranslate PRIVATE src/MetalTranslate.cpp)

# Link the external libraries
add_dependencies(metaltranslate CTranslate2 Tokenizer)
target_link_libraries(metaltranslate ${EXTERNAL_INSTALL_LOCATION}/lib/libctranslate2.so)
target_link_libraries(metaltranslate ${EXTERNAL_INSTALL_LOCATION}/lib/libOpenNMTTokenizer.so)

```

Please revise CMakelists.txt like this.
It was not works previous version on my machine

Open the repository's CMakeLists.txt and compare it with the supplied ExternalProject_Add configuration for CTranslate2 and Tokenizer. Configure and build the project to verify the pinned revisions and library linking work; done means the external projects build and metaltranslate links successfully.

Written by the indexing model from the issue text.