fix: rollup terser plugin

[hkang1]

Previous rollup terser plugin was not being used and has since been deprecated. Install new terser plugin and apply it.

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[codecov]

Codecov Report

Merging #113 (48d00af) into main (e88765b) will decrease coverage by 0.90%.
The diff coverage is n/a.

❗ Current head 48d00af differs from pull request most recent head 4396652. Consider uploading reports for the commit 4396652 to get more accurate results

@@            Coverage Diff             @@
##             main     #113      +/-   ##
==========================================
- Coverage   99.00%   98.10%   -0.90%     
==========================================
  Files          17       17              
  Lines        1716     1587     -129     
  Branches      586      533      -53     
==========================================
- Hits         1699     1557     -142     
- Misses         17       30      +13     

see 7 files with indirect coverage changes

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