chore: update the esbuild dependencies

[WilliamBergamin]

Summary

This PR aims to improve the bundle experience of the SDK by updating the esbuild-deno-loader version

You can tests this out by overriding the "build" in the slack.json file of a peoject

{
  "hooks": {
    "get-hooks": "deno run -q --allow-read --allow-net https://deno.land/x/[email protected]/mod.ts",
    "build": "deno run -q --config=deno.jsonc --allow-read --allow-write --allow-net --allow-run --allow-env --allow-sys=osRelease https://raw.githubusercontent.com/slackapi/deno-slack-hooks/refs/heads/update-dependencies/src/build.ts"
  }
}

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.31%. Comparing base (0916465) to head (6849c77).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #98   +/-   ##
=======================================
  Coverage   78.31%   78.31%           
=======================================
  Files          16       16           
  Lines         876      876           
  Branches      130      130           
=======================================
  Hits          686      686           
  Misses        189      189           
  Partials        1        1           

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[zimeg]

LGTM and this is awesome! These releases seem to have done something magic, since npm:slackify-markdown from #89 works with these changes! 🪄 ✨

Wanted to note that support for some older systems is removed with the esbuild release, but I don't believe that requires major changes for us - let me know if you think otherwise though 🤔