fix: upgrade deps, improve entry file detection

[DylanPiercey]

Description

• Upgrade all deps
• Fix support for using .marko file as a <script> src for the top level html file (now includes only hydrate code).
• Test cleanup to remove hashes

Checklist:

• I have updated/added documentation affected by my changes.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #9 (7545cee) into main (19ce8da) will increase coverage by 0.02%.
The diff coverage is 78.94%.

❗ Current head 7545cee differs from pull request most recent head 2b379dd. Consider uploading reports for the commit 2b379dd to get more accurate results

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
+ Coverage   64.47%   64.49%   +0.02%     
==========================================
  Files           5        5              
  Lines         304      307       +3     
  Branches       74       78       +4     
==========================================
+ Hits          196      198       +2     
  Misses         79       79              
- Partials       29       30       +1     

Impacted Files	Coverage Δ
src/index.ts	59.36% <78.94%> (+0.10%)	⬆️
src/serializer.ts	62.50% <0.00%> (ø)
src/server-entry-template.ts	80.00% <0.00%> (ø)

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[github-actions]

🎉 This PR is included in version 2.1.1 🎉

The release is available on:

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

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