fix(web-api): add channel_id to canvases.create method

[zimeg]

Summary

This PR fixes #2472 with the addition of channel_id to the canvases.create method.

Requirements

• 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.

[changeset-bot]

🦋 Changeset detected

Latest commit: 135fa3f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@slack/web-api	Patch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.10%. Comparing base (f34cdba) to head (135fa3f).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2505   +/-   ##
=======================================
  Coverage   93.10%   93.10%           
=======================================
  Files          40       40           
  Lines       11250    11250           
  Branches      713      713           
=======================================
  Hits        10474    10474           
  Misses        764      764           
  Partials       12       12           

Flag	Coverage Δ
cli-hooks	95.30% <ø> (ø)
cli-test	94.79% <ø> (ø)
oauth	77.39% <ø> (ø)
socket-mode	61.87% <ø> (ø)
web-api	98.11% <ø> (ø)
webhook	96.66% <ø> (ø)

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