Invalid UTF-8 chars prevent formatting

[lucacasonato]

Describe the bug

deno fmt fails to format a JSON file because it contains invalid UTF8 chars.

dprint-plugin-json version: 0.10.2

Input Code

See https://gist.github.com/lucacasonato/a060df497ca3156327bcef46a554a8fb

Expected Output

A nicely formatted file, like prettier is able to generate.

Actual Output

Error formatting: /home/lucacasonato/Downloads/report.json
   Line 1, column 785340: Invalid unicode escape sequence. 'd834' is not a valid UTF8 character

  to ArrayBuffer with \ud834A\udf06A¥
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