[mwbrooks]

Summary

This pull request moves the web-api and webhook packages to nock 15.0.5 for maintainers, so the recurring dependabot bumps stop failing CI. It replaces #2802, #2799, and #2800.

• nock 15 reads a two-argument reply callback as the old callback style and waits for a callback that never runs, which is what stalled the web-api tests. Reply callbacks now take no arguments, or the new Request argument when they check the request body.
• nock 15's delay() only delays the response body. The concurrency tests now hold the response headers with an async reply, because headers arriving is what frees a slot in the client's request queue.
• Test and dev dependency changes only, so there is no changeset.

Testing

• Ran npm test in packages/web-api (153 passed) and packages/webhook (39 passed) on Node 26.4.0 with nock 15.0.5.
• Before the change, src/WebClient.test.ts hung with "Promise resolution is still pending but the event loop has already resolved", the same failure as chore(deps-dev): bump nock from 14.0.17 to 15.0.1 #2782 and chore(deps-dev): bump nock from 14.0.17 to 15.0.3 #2795.

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]

⚠️ No Changeset found

Latest commit: 5301749

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.22%. Comparing base (6f6fbd1) to head (5301749).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2805      +/-   ##
==========================================
- Coverage   89.25%   89.22%   -0.03%     
==========================================
  Files          65       65              
  Lines       10562    10562              
  Branches      489      489              
==========================================
- Hits         9427     9424       -3     
- Misses       1103     1105       +2     
- Partials       32       33       +1     

Flag	Coverage Δ
cli-hooks	89.21% <ø> (ø)
cli-test	89.21% <ø> (ø)
logger	89.21% <ø> (ø)
oauth	89.21% <ø> (ø)
socket-mode	89.21% <ø> (ø)
web-api	89.21% <ø> (ø)
webhook	89.21% <ø> (ø)

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[mwbrooks]

note: Closing for now, because nock 15 requires Node.js 22.20 or later and we still support Node.js 20. #2806 holds nock at 14.x and links back here, so these test changes are easy to pick up once Node.js 20 support is dropped.