Expose AWS Region to NWBHDF5IO

[rly]

Motivation

Companion to hdmf-dev/hdmf#1040 to allow the user to set the AWS region in NWBHDF5IO. Requires that branch of HDMF to be merged and released.

Also use HDMF 3.14.0

Checklist

• Did you update CHANGELOG.md with your changes?
• Have you checked our Contributing document?
• Have you ensured the PR clearly describes the problem and the solution?
• Is your contribution compliant with our coding style? This can be checked running flake8 from the source directory.
• Have you checked to ensure that there aren't other open Pull Requests for the same change?
• Have you included the relevant issue number using "Fix #XXX" notation where XXX is the issue number? By including "Fix #XXX" you allow GitHub to close issue #XXX when the PR is merged.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.02%. Comparing base (7a0d8b4) to head (9dc816a).
Report is 20 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1903   +/-   ##
=======================================
  Coverage   92.02%   92.02%           
=======================================
  Files          27       27           
  Lines        2620     2620           
  Branches      685      685           
=======================================
  Hits         2411     2411           
  Misses        139      139           
  Partials       70       70           

Flag	Coverage Δ
integration	73.24% <100.00%> (ø)
unit	83.93% <100.00%> (ø)

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[rly]

Tests are failing due to unrelated issues with the Zarr tutorial.