added patch to allow l10n to run on windows

assets/fix-l10n-package-cmd.patch

@@ -0,0 +1,12 @@
+diff --git a/python/mozbuild/mozbuild/mach_commands.py b/python/mozbuild/mozbuild/mach_commands.py
+index 10d7a8f..0ce2ee3 100644
+--- a/python/mozbuild/mozbuild/mach_commands.py
++++ b/python/mozbuild/mozbuild/mach_commands.py
+@@ -2457,6 +2457,7 @@ def package_l10n(command_context, verbose=False, locales=[]):
+         )
+         command_context.run_process(
+             [
++                "python3",
+                 mozpath.join(command_context.topsrcdir, "mach"),
+                 "build",
+                 "chrome-{}".format(locale),

mk.py

@@ -102,7 +102,8 @@ def build(debug=False):
             patch('../assets/package-manifest.patch')
             patch('../assets/disable-verify-mar.patch')
             patch('../assets/tryfix-reslink-fail.patch')
-
+            patch('../assets/fix-l10n-package-cmd.patch')
+            
             # perform the build and package.
             exec('./mach build')
             exec('./mach package')