fix: duplicated banner after minified (fix #346)

[fi3ework]

By default, terser will preserve license(https://github.com/terser/terser#output-options). Set terser.output.comments to false to tell terser drop license, and we use bili's banner option.

[vercel]

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[codecov]

Codecov Report

Merging #359 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #359   +/-   ##
=======================================
  Coverage   75.33%   75.33%           
=======================================
  Files          11       11           
  Lines         454      454           
  Branches      169      165    -4     
=======================================
  Hits          342      342           
  Misses        107      107           
  Partials        5        5           

Impacted Files	Coverage Δ
src/index.ts	73.84% <ø> (ø)

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[egoist]

🎉 This PR is included in version 5.0.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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