ci: complete all sample tests even if one fails fast

[zimeg]

Summary

This PR runs all of the sample tests to completion even if one fails fast. This is useful in finding if a test is failing for a certain sample or version of Node 👁️‍🗨️

Preview

Before this change is shown below:

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.

[zimeg]

npm error code ECONNRESET
npm error errno ECONNRESET
npm error network Invalid response body while trying to fetch https://registry.npmjs.org/@types%2fnode: aborted
npm error network This is a problem related to network connectivity.
npm error network In most cases you are behind a proxy or have bad network settings.
npm error network
npm error network If you are behind a proxy, please make sure that the
npm error network 'proxy' config is set properly.  See: 'npm help config'
npm error A complete log of this run can be found in: /home/runner/.npm/_logs/202[5](https://github.com/slackapi/bolt-js/actions/runs/12678404454/job/35335911391?pr=2386#step:4:6)-01-08T20_22_46_296Z-debug-0.log

Hmmm... This Node.js CI / build (18.x) (pull_request) to Node 18 🤔

A few other errors with samples are appearing, but I'll investigate these. For now, here's what the update shows as!:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.59%. Comparing base (2d26011) to head (e3124eb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2386   +/-   ##
=======================================
  Coverage   92.59%   92.59%           
=======================================
  Files          36       36           
  Lines        7472     7472           
  Branches      653      653           
=======================================
  Hits         6919     6919           
  Misses        545      545           
  Partials        8        8           

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[WilliamBergamin]

I agree with this behavior 👍
This can help to quickly determine which samples/examples are affected by a given change. Especially in the scenario where dependabot updates dependencies

[zimeg]

@WilliamBergamin Thanks for calling out the multiplication of matrix updates from @dependabot! 👾

I think a fun follow-up PR will put this all of the test after this is merged 👀