Update ngrok to v3

[style95]

Description

Upgrade the version of ngrok to v3.
It is required to run the on-demand workflow to debug CI tests.

Related issue and scope

• I opened an issue to propose and discuss this change (#????)

My changes affect the following components

• API
• Controller
• Message Bus (e.g., Kafka)
• Loadbalancer
• Scheduler
• Invoker
• Intrinsic actions (e.g., sequences, conductors)
• Data stores (e.g., CouchDB)
• Tests
• Deployment
• CLI
• General tooling
• Documentation

Types of changes

• Bug fix (generally a non-breaking change which closes an issue).
• Enhancement or new feature (adds new functionality).
• Breaking change (a bug fix or enhancement which changes existing behavior).

Checklist:

• I signed an Apache CLA.
• I reviewed the style guides and followed the recommendations (Travis CI will check :).
• I added tests to cover my changes.
• My changes require further changes to the documentation.
• I updated the documentation where necessary.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (aea3a88) 76.60% compared to head (19841b0) 76.50%.

❗ Current head 19841b0 differs from pull request most recent head 09921e2. Consider uploading reports for the commit 09921e2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5465      +/-   ##
==========================================
- Coverage   76.60%   76.50%   -0.11%     
==========================================
  Files         241      241              
  Lines       14650    14650              
  Branches      644      644              
==========================================
- Hits        11223    11208      -15     
- Misses       3427     3442      +15     

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