Fix rc file Non-ASCII 8-bit in non-Unicode string

[stephomi]

Llvm-mingw on MacOS (when cross-compiling for Windows) refused to build when it happens.

Description

The build error (since commit e8aa5f1) :

llvm-rc: Error in VERSIONINFO statement (ID 1): 
Non-ASCII 8-bit codepoint (169) can't occur in a non-Unicode string

Type of change

Choose one or multiple, leave empty if none of the other choices apply

Add a respective label(s) to PR if you have permissions

• bug fix - change that fixes an issue
• new feature - change that adds functionality
• tests - change in tests
• infrastructure - change in infrastructure and CI
• documentation - documentation update

Tests

• added - required for new features and some bug fixes
• not needed

Documentation

• updated in # - add PR number
• needs to be updated
• not needed

Breaks backward compatibility

• Yes
• No
• Unknown

Notify the following users

List users with @ to send notifications

Other information

Builds successfully with:
llvm-mingw on macOS (cross-compile)
llvm-mingw on Windows

[omalyshe]

LGTM. Thanks you for the fix!