🤖 Sync org-wide files to upstream repo (#316)

More info: 0328994b10

bin/fetch-configlet

@@ -24,6 +24,7 @@ get_download_url() {
   local latest='https://api.github.com/repos/exercism/configlet/releases/latest'
   local arch
   case "$(uname -m)" in
+    aarch64|arm64) arch='arm64'  ;;
     x86_64)        arch='x86-64' ;;
     *686*)         arch='i386'   ;;
     *386*)         arch='i386'   ;;
@@ -47,7 +48,7 @@ main() {
   fi
 
   local os
-  case "$(uname)" in
+  case "$(uname -s)" in
     Darwin*)   os='macos'   ;;
     Linux*)    os='linux'   ;;
     Windows*)  os='windows' ;;
@@ -58,7 +59,7 @@ main() {
 
   local ext
   case "${os}" in
-    windows*) ext='zip'    ;;
+    windows) ext='zip'    ;;
     *)       ext='tar.gz' ;;
   esac
 
@@ -69,7 +70,7 @@ main() {
   curl "${curlopts[@]}" --output "${output_path}" "${download_url}"
 
   case "${ext}" in
-    *zip) unzip "${output_path}" -d "${output_dir}"   ;;
+    zip) unzip "${output_path}" -d "${output_dir}"   ;;
     *)   tar xzf "${output_path}" -C "${output_dir}" ;;
   esac
 
@@ -77,7 +78,7 @@ main() {
 
   local executable_ext
   case "${os}" in
-    windows*) executable_ext='.exe' ;;
+    windows) executable_ext='.exe' ;;
     *)       executable_ext=''     ;;
   esac