fix: use wait in findBy queries

[timdeschryver]

What: Using the wait method instead of waitForElement for the findBy queries

Why: To prevent that deprecations are logged

Closes #468

How: Replace waitForElement with wait (and by renaming waitForElementOptions to waitOptions)

Checklist:

• Documentation added to the
  docs site
• I've prepared a PR for types targeting
  DefinitelyTyped
• Tests
• Ready to be merged
  

Something else that I've encountered, is that the changes made in #461 didn't make it into the beta branch.

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[codecov]

Codecov Report

Merging #469 into beta will not change coverage.
The diff coverage is 100%.

@@         Coverage Diff         @@
##           beta   #469   +/-   ##
===================================
  Coverage   100%   100%           
===================================
  Files        22     22           
  Lines       420    419    -1     
  Branches    100    100           
===================================
- Hits        420    419    -1

Impacted Files	Coverage Δ
src/query-helpers.js	100% <100%> (ø)	⬆️

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[kentcdodds]

Perfect. Thank you!

[timdeschryver]

In case you missed it, while making these changes I saw the changes made in #461 didn't make it into the beta branch, and I'm not sure where these changes are...