Update some package dependencies

[future-is-present]

No description provided.

[codecov-io]

Codecov Report

Merging #287 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #287   +/-   ##
=======================================
  Coverage   95.14%   95.14%           
=======================================
  Files          12       12           
  Lines         309      309           
=======================================
  Hits          294      294           
  Misses         15       15

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[ttmc]

I see that "version": "4.1.1", is already updated in package.json.

There are probably other things to do when doing a new release, but there doesn't seem to be a "release process" file in this repository listing those things to do. To get a sense of what to consider doing, you might find it helpful to look at the release process file for BigchainDB Server, at:

https://github.com/bigchaindb/bigchaindb/blob/master/RELEASE_PROCESS.md

[ttmc]

I'm closing this to make way for doing a new release following the newly-documented release process (documented in #293 ).

[ttmc]

I looked at what this pull request does and realized that it should probably be reopened, approved, and merged, because it updates some package dependencies. I was thrown off by its title. I will reopen this pull request and change its title.

[ttmc]

All tests are passing, so that is good!