(webdriver): retry on post requests

[christian-bromann]

Proposed changes

We have experienced a lot of errors in our test pipeline from our e2e Windows tests where establishing an Edge session failed due to ECONNREFUSED. This could be caused by Edgedriver not being ready for requests at the point of calling newSession. I looked into our retry mechanism which should catch this and turns out we don't do retries on POST requests since got doesn't do this by default.

I updated the methods option for retries to include post requests since they are used a lot in the WebDriver protocol.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Further comments

n/a

Reviewers: @webdriverio/project-committers