feat: use esprima-next that contains the latest release of ESM support

[cheton]

No description provided.

[codecov]

Codecov Report

Merging #221 (e9efb07) into master (56c7bf0) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #221   +/-   ##
=======================================
  Coverage   91.13%   91.13%           
=======================================
  Files           6        6           
  Lines         564      564           
=======================================
  Hits          514      514           
  Misses         50       50           

Impacted Files	Coverage Δ
src/parser.js	90.30% <100.00%> (ø)

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