Update Windows build instructions

lua -> lua54

Author: jsmucr

packaging/windows/README.md

@@ -15,7 +15,7 @@ The steps to build the darktable Windows executable and make the installer are a
 
 * Install required and recommended dependencies for darktable:
     ```bash
-    pacman -S --needed mingw-w64-ucrt-x86_64-{libxslt,python-jsonschema,curl,drmingw,exiv2,gettext,gmic,graphicsmagick,gtk3,icu,imath,iso-codes,lcms2,lensfun,libavif,libarchive,libgphoto2,libheif,libjpeg-turbo,libjxl,libpng,libraw,librsvg,libsecret,libtiff,libwebp,libxml2,lua,openexr,openjpeg2,osm-gps-map,portmidi,potrace,pugixml,SDL2,sqlite3,webp-pixbuf-loader,zlib}
+    pacman -S --needed mingw-w64-ucrt-x86_64-{libxslt,python-jsonschema,curl,drmingw,exiv2,gettext,gmic,graphicsmagick,gtk3,icu,imath,iso-codes,lcms2,lensfun,libavif,libarchive,libgphoto2,libheif,libjpeg-turbo,libjxl,libpng,libraw,librsvg,libsecret,libtiff,libwebp,libxml2,lua54,openexr,openjpeg2,osm-gps-map,portmidi,potrace,pugixml,SDL2,sqlite3,webp-pixbuf-loader,zlib}
     ```
 
 * Install the optional tool for building an installer image (currently x64 only):