Add an explicit import for Scala's NonFatal to fix compatibility issue w/ twitter-util 19.1.0.

[jcohen]

This addresses #283.

[CLAassistant]

All committers have signed the CLA.

[codecov-io]

Codecov Report

Merging #284 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #284   +/-   ##
========================================
  Coverage    71.65%   71.65%           
========================================
  Files           50       50           
  Lines         1397     1397           
  Branches        50       50           
========================================
  Hits          1001     1001           
  Misses         396      396

Impacted Files	Coverage Δ
...r/bijection/twitter_util/JavaFutureConverter.scala	58.82% <ø> (ø)	⬆️

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