add platformdirs to dependencies

scripts/msys2-install-deps

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-pacman -S --needed --noconfirm git mingw-w64-ucrt-x86_64-{toolchain,pkgconf,zstd,lz4,xxhash,openssl,python,cython,python-setuptools,python-wheel,python-pkgconfig,python-packaging,python-msgpack,python-argon2_cffi,python-pip}
+pacman -S --needed --noconfirm git mingw-w64-ucrt-x86_64-{toolchain,pkgconf,zstd,lz4,xxhash,openssl,python-msgpack,python-argon2_cffi,python-platformdirs,python,cython,python-setuptools,python-wheel,python-pkgconfig,python-packaging,python-pip}
 pip install pyinstaller
 
 if [ "$1" = "development" ]; then

setup.cfg

@@ -41,6 +41,7 @@ setup_requires =
 install_requires =
   msgpack >=1.0.3, <=1.0.4
   packaging
+  platformdirs
   argon2-cffi
 tests_require =
   pytest