Avoid using non-ASCII Unicode characters outside of comments and literals

In error-prone 2.11.0 I've started getting the following error when building within IntelliJ

```
Foo.java:17:2
java: [UnicodeInCode] Avoid using non-ASCII Unicode characters outside of comments and literals, as they can be confusing.
(see https://errorprone.info/bugpattern/UnicodeInCode)
```

When I view the file in VIM or HexDump there I can't see any non-unicode characters.

Line 17 is the end of the file, I can't supply the whole file due to work constraints. But below is a screenshot of the end of the file from hexedit

Within IntelliJ the formatter is doing

If I down grade error-prone to 2.10.0 it works fine on the offending file