Bump x-ray from 2.3.3 to 2.3.4

[dependabot-preview[bot]]

Bumps x-ray from 2.3.3 to 2.3.4.

Release notes

*Sourced from [x-ray's releases](https://github.com/matthewmueller/x-ray/releases).* > ## Housekeeping edition > Most of this is housekeeping to bump dependency versions, fix testability due to dependency changes, etc. > > Now requires Node 6+. > > Also, updates to add better async/await support and handling of empty streams.

Commits

- [`6d54479`](https://github.com/matthewmueller/x-ray/commit/6d54479b0e7f26ff61c6f2e6646f3c3efd0ffe3d) Fix array stream to account for empty arrays ([#337](https://github-redirect.dependabot.com/matthewmueller/x-ray/issues/337)) - [`d6fba8a`](https://github.com/matthewmueller/x-ray/commit/d6fba8a2491f2a46538410f8a55be90425e571dd) Merge pull request [#339](https://github-redirect.dependabot.com/matthewmueller/x-ray/issues/339) from leonardodino/fix-promise-then - [`6167fc0`](https://github.com/matthewmueller/x-ray/commit/6167fc0e38020a9528e6180a58fa16c5c90795a8) Add test checking error being passed to promise handler - [`7ed40fa`](https://github.com/matthewmueller/x-ray/commit/7ed40fa86bc3444bd888daad833e6c567d9218d8) Add promise interface testing - [`0741ec1`](https://github.com/matthewmueller/x-ray/commit/0741ec165b2e3ba67d9940b0d8b764f84180b94b) Fix promise compatibility - [`96685eb`](https://github.com/matthewmueller/x-ray/commit/96685ebd0a5e9810409b38a80ed7bfaf483c415b) Merge pull request [#338](https://github-redirect.dependabot.com/matthewmueller/x-ray/issues/338) from leonardodino/fix-repo - [`2b87235`](https://github.com/matthewmueller/x-ray/commit/2b872358217b975f3aaa812014d7e5dff4edd7cc) Merge pull request [#342](https://github-redirect.dependabot.com/matthewmueller/x-ray/issues/342) from lathropd/fix-package-json - [`21b3dba`](https://github.com/matthewmueller/x-ray/commit/21b3dba7606f3243f98b32b70bd0dce685295640) Merge branch 'master' into fix-repo - [`c0b4562`](https://github.com/matthewmueller/x-ray/commit/c0b45623791b7d8c75210e586a8137334dc0f111) Merge pull request [#341](https://github-redirect.dependabot.com/matthewmueller/x-ray/issues/341) from lathropd/fix-travis - [`fc62004`](https://github.com/matthewmueller/x-ray/commit/fc6200413cd4dc0f8dc02ac38dc804f2d0ffa77c) revise package.json to correct repo urls, improve contributors entry - Additional commits viewable in [compare view](https://github.com/matthewmueller/x-ray/compare/2.3.3...2.3.4)

Maintainer changes

This version was pushed to npm by [lathropd](https://www.npmjs.com/~lathropd), a new releaser for x-ray since your current version.

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[dependabot-preview[bot]]

Looks like x-ray is up-to-date now, so this is no longer needed.