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* feat: relocate netty and gax substitutions from java-core

* feat: relocate Opencensus configurations from java-core to gax

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [gradle](https://gradle.org) ([source](https://togithub.com/gradle/gradle)) | patch | `7.4.1` -> `7.4.2` |

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### Release Notes

<details>
<summary>gradle/gradle</summary>

### [`v7.4.2`](https://togithub.com/gradle/gradle/releases/v7.4.2)

This is a patch release for Gradle 7.4.

See the list of fixed issues: https://docs.gradle.org/7.4.2/release-notes.html

We recommend users upgrade to 7.4.2 instead of 7.4 or another patch release.

#### Upgrade Instructions

Switch your build to use Gradle 7.4.2 by updating your wrapper:

    ./gradlew wrapper --gradle-version=7.4.2

See the [Gradle 7.x upgrade guide](https://docs.gradle.org/7.4.2/userguide/upgrading_version\_7.html#changes\_7.4) to learn about deprecations, breaking changes and other considerations when upgrading to Gradle 7.4.2.

#### Reporting Problems

If you find a problem with this release, please file a bug on [GitHub Issues](https://togithub.com/gradle/gradle/issues) adhering to our issue guidelines.
If you're not sure you're encountering a bug, please use the [forum](https://discuss.gradle.org/c/help-discuss).

</details>

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### Configuration

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🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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* feat: relocate GoogleJsonClientFeature from java-core to gax

🤖 I have created a release *beep* *boop*
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## [2.16.0](v2.15.0...v2.16.0) (2022-04-14)


### Features

* relocate ApiClientSubstitutions from java-core to gax ([#1651](#1651)) ([321103f](321103f))
* relocate GoogleJsonClientFeature from java-core to gax ([#1655](#1655)) ([6e75ec7](6e75ec7))
* relocate netty and gax substitutions from java-core ([#1650](#1650)) ([afd1917](afd1917))
* relocate Opencensus configurations from java-core to gax ([#1646](#1646)) ([b34ffb1](b34ffb1))
* relocate resource-config from java-core to gax ([#1656](#1656)) ([a9e5483](a9e5483))


### Dependencies

* google-common-protos 2.8.3 ([#1657](#1657)) ([24b9138](24b9138))

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