chore(deps): bump okhttp from 3.8.0 to 4.0.1

[dependabot-preview[bot]]

Bumps okhttp from 3.8.0 to 4.0.1.

Changelog

*Sourced from [okhttp's changelog](https://github.com/square/okhttp/blob/master/CHANGELOG.md).* > ## Version 4.0.1 > > _2019-07-10_ > > * Fix: Tolerate null-hostile lists in public API. Lists created with `List.of(...)` don't like it > when you call `contains(null)` on them! > * Fix: Retain binary-compatibility in `okhttp3.internal.HttpHeaders.hasBody()`. Some unscrupulous > coders call this and we don't want their users to suffer. > > > ## Version 4.0.0 > > _2019-06-26_ > > **This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade > from OkHttp 3.x. We wrote an [upgrade guide][upgrading_to_okhttp_4] to help with the migration and a > [blog post][okhttp4_blog_post] to explain it. > > * Fix: Target Java 8 bytecode for Java and Kotlin. > > > ## Version 4.0.0-RC3 > > _2019-06-24_ > > * Fix: Retain binary-compatibility in `okhttp3.internal.HttpMethod`. Naughty third party SDKs > import this and we want to ease upgrades for their users. > > > ## Version 4.0.0-RC2 > > _2019-06-21_ > > * New: Require Kotlin 1.3.40. > * New: Change the Kotlin API from `File.toRequestBody()` to `File.asRequestBody()` and > `BufferedSource.toResponseBody()` to `BufferedSource.asResponseBody()`. If the returned value > is a view of what created it, we use _as_. > * Fix: Permit response codes of zero for compatibility with OkHttp 3.x. > * Fix: Change the return type of `MockWebServer.takeRequest()` to be nullable. > * Fix: Make `Call.clone()` public to Kotlin callers. > > > ## Version 4.0.0-RC1 > > _2019-06-03_ > > * First stable preview of OkHttp 4. > > > ## Version 3.14.2 > ... (truncated)

Commits

- [`1854a7b`](https://github.com/square/okhttp/commit/1854a7b82d1d23309ff9e2aa38064e7fce3b6b2c) Prepare for release 4.0.1. - [`7883ac9`](https://github.com/square/okhttp/commit/7883ac9dac2df3d15e328e2d791cf966cfa0468c) Merge pull request [#5278](https://github-redirect.dependabot.com/square/okhttp/issues/5278) from square/jwilson.0710.okhttp401 - [`2bf6737`](https://github.com/square/okhttp/commit/2bf673763998122af609018ae3e1a80536032a0d) Java internal compatibility e.g. HttpHeaders.hasBody ([#5251](https://github-redirect.dependabot.com/square/okhttp/issues/5251)) - [`a890681`](https://github.com/square/okhttp/commit/a890681e4304e800d439ff317033910f72d6c117) Tolerate null-hostile lists in public API - [`911c5bf`](https://github.com/square/okhttp/commit/911c5bf5b27e8378f209861a16a9da4cc54cfff7) Prepare for release 4.0.0. - [`fafcf4b`](https://github.com/square/okhttp/commit/fafcf4b8228c1df9ec9f29cd993df4bddf1a437d) Merge pull request [#5242](https://github-redirect.dependabot.com/square/okhttp/issues/5242) from yschimke/prefer_jdk11 - [`c88f9a9`](https://github.com/square/okhttp/commit/c88f9a9ed383d68015ed28eb7a93541b84a9e9ec) Prefer JDK 11 for tests - [`b7e6f4f`](https://github.com/square/okhttp/commit/b7e6f4fc85ac8e2d963a18dc586f908816933b9e) Fix conscrypt tests ([#5241](https://github-redirect.dependabot.com/square/okhttp/issues/5241)) - [`d81ec0f`](https://github.com/square/okhttp/commit/d81ec0f23bf4cc97060a75a0b12e299bd8dfdefc) OkHttpClientTestRule check connectionCount instead of idle ([#5226](https://github-redirect.dependabot.com/square/okhttp/issues/5226)) - [`d1b99e6`](https://github.com/square/okhttp/commit/d1b99e6925e4a70de8bb568fa49c35ac954d13e7) Merge pull request [#5239](https://github-redirect.dependabot.com/square/okhttp/issues/5239) from square/jakew/eleven/2019-06-25 - Additional commits viewable in [compare view](https://github.com/square/okhttp/compare/parent-3.8.0...parent-4.0.1)

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Superseded by #1139.