update-download-data: accommodate for recent changes in Git for Windows

As of v2.49.0, Git for Windows no longer ships 32-bit (also known as
"i686" or "Intel 32-bit") installers. However, Git for Windows started
shipping ARM64 versions since v2.47.1.

Let's accommodate for that by recording these artifacts, using the CPU
architecture rather than merely the bitness (which would now be
meaningless because both x64 and arm64 are 64-bit).

Subsequent commits will consume these new data items.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

script/update-download-data.rb

@@ -15,7 +15,7 @@ class DownloadData
   # name, version, url & date with Feedzirra
   SOURCEFORGE_URL = "https://sourceforge.net/projects/git-osx-installer/rss?limit=20"
 
-  GIT_FOR_WINDOWS_REGEX           = /^(Portable|)Git-(\d+\.\d+\.\d+(?:\.\d+)?)-(?:.+-)*(32|64)-bit(?:\..*)?\.exe/
+  GIT_FOR_WINDOWS_REGEX           = /^(Portable|)Git-(\d+\.\d+\.\d+(?:\.\d+)?)-(?:.+-)*(64-bit|arm64)(?:\..*)?\.exe/
   GIT_FOR_WINDOWS_NAME_WITH_OWNER = "git-for-windows/git"
 
   class << self
@@ -26,13 +26,14 @@ def sourceforge_project_download_url(project, filename)
     def update_download_windows_versions(config)
       files_from_github(GIT_FOR_WINDOWS_NAME_WITH_OWNER).each do |name, date, url|
         # Git for Windows uses the following naming system
-        # [Portable]Git-#.#.#.#[-dev-preview]-32/64-bit[.7z].exe
+        # [Portable]Git-#.#.#.#[-dev-preview]-64-bit/arm64[.7z].exe
         match = GIT_FOR_WINDOWS_REGEX.match(name)
 
         next unless match
 
         portable = match[1]
-        bitness  = match[3]
+        architecture = match[3]
+        architecture = "x64" if architecture == "64-bit"
 
         # Git for windows sometimes creates extra releases all based off of the same upstream Git version
         # so we first want to crop versions like 2.16.1.4 to just 2.16.1
@@ -44,9 +45,9 @@ def update_download_windows_versions(config)
           config["windows_installer"] = {} if config["windows_installer"].nil?
           win_config = config["windows_installer"]
           if portable.empty?
-            key = "installer#{bitness}"
+            key = "installer_#{architecture}"
           else
-            key = "portable#{bitness}"
+            key = "portable_#{architecture}"
           end
           win_config[key] = {} if win_config[key].nil?
           return if version_compare(version, win_config[key]["version"]) < 0