Bump okhttp from 3.12.1 to 4.9.0

[dependabot]

Bumps okhttp from 3.12.1 to 4.9.0.

Changelog

Sourced from okhttp's changelog.

Version 4.9.0

2020-09-11

With this release, okhttp-tls no longer depends on Bouncy Castle and doesn't install the Bouncy Castle security provider. If you still need it, you can do it yourself:

Security.addProvider(BouncyCastleProvider())

You will also need to configure this dependency:

dependencies {
  implementation "org.bouncycastle:bcprov-jdk15on:1.65"
}

• Upgrade: [Kotlin 1.4.10][kotlin_1_4_10]. We now use Kotlin 1.4.x [functional interfaces][fun_interface] for Authenticator, Interceptor, and others.
• Upgrade: Build with Conscrypt 2.5.1.

Version 4.8.1

2020-08-06

• Fix: Don't crash in HeldCertificate.Builder when creating certificates on older versions of Android, including Android 6. We were using a feature of SimpleDateFormat that wasn't available in those versions!

Version 4.8.0

2020-07-11

• New: Change HeldCertificate.Builder to use its own ASN.1 certificate encoder. This is part of our effort to remove the okhttp-tls module's dependency on Bouncy Castle. We think Bouncy Castle is great! But it's a large dependency (6.5 MiB) and its security provider feature impacts VM-wide behavior.

• New: Reduce contention for applications that make a very high number of concurrent requests. Previously OkHttp used its connection pool as a lock when making changes to connections and calls. With this change each connection is locked independently.

• Upgrade: [Okio 2.7.0][okio_2_7_0].

  implementation("com.squareup.okio:okio:2.7.0")

Commits

• cbeaf8f Prepare for release 4.9.0.
• 8fd74a7 Conscrypt 2.5.1 Upgrade (#6263)
• 2bd749d Kotlin 1.4.10 Upgrade (#6264)
• 0164696 Fix build on windows (#6257)
• e4c3b28 Fix HttpUrl documentation (#6259)
• 8c2f383 Document interceptor throwing modes (#6235)
• a76c40a Kotlin 1.4 dependency upgrade and language features (#5947)
• 1589741 Fix Caching documentation. (#6247)
• 45010c5 Add "MockWebServer" as a known logger (#6229)
• dbb2c34 Update https.md (#6234)
• Additional commits viewable in compare view

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[baywet]

Related microsoftgraph/msgraph-sdk-java#465

[zengin]

@baywet do you know why we have a typeSummary diff for this change?

[baywet]

@zengin I'm not sure. But I don't want to merge that before we publish v3. Closing.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.