deps: update dependency com.google.cloud:google-cloud-channel-bom to v3.7.0 (#4604)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-channel-bom](https://togithub.com/googleapis/java-channel) | `3.6.1` -> `3.7.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-channel-bom/3.7.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-channel-bom/3.7.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-channel-bom/3.7.0/compatibility-slim/3.6.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-channel-bom/3.7.0/confidence-slim/3.6.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-channel</summary>

### [`v3.7.0`](https://togithub.com/googleapis/java-channel/blob/HEAD/CHANGELOG.md#&#8203;370-httpsgithubcomgoogleapisjava-channelcomparev361v370-2022-07-01)

[Compare Source](https://togithub.com/googleapis/java-channel/compare/v3.6.1...v3.7.0)

##### Features

-   Enable REST transport for most of Java and Go clients ([#&#8203;311](https://togithub.com/googleapis/java-channel/issues/311)) ([b2260c8](https://togithub.com/googleapis/java-channel/commit/b2260c87d95f91517b4cbeb949035936ff875b3c))

##### Bug Fixes

-   update gapic-generator-java with mock service generation fixes ([#&#8203;317](https://togithub.com/googleapis/java-channel/issues/317)) ([d28dd8f](https://togithub.com/googleapis/java-channel/commit/d28dd8f59e895ca12dff9a7a4640cedd2744c03c))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -289,7 +289,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-channel-bom</artifactId>
-        <version>3.6.1</version>
+        <version>3.7.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>