deps: update dependency com.google.cloud:google-cloud-gkehub-bom to v1.3.0 (#4657)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-gkehub-bom](https://togithub.com/googleapis/java-gkehub) | `1.2.1` -> `1.3.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-gkehub-bom/1.3.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-gkehub-bom/1.3.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-gkehub-bom/1.3.0/compatibility-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-gkehub-bom/1.3.0/confidence-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v1.3.0`](https://togithub.com/googleapis/java-gkehub/blob/HEAD/CHANGELOG.md#&#8203;130-httpsgithubcomgoogleapisjava-gkehubcomparev121v130-2022-07-01)

[Compare Source](https://togithub.com/googleapis/java-gkehub/compare/v1.2.1...v1.3.0)

##### Features

-   add ApplianceCluster as a new membershipEndpoint type ([513887b](https://togithub.com/googleapis/java-gkehub/commit/513887bb1f89d61da43717c4fcb0b841336afdd2))
-   add c++ rules in BUILD file ([513887b](https://togithub.com/googleapis/java-gkehub/commit/513887bb1f89d61da43717c4fcb0b841336afdd2))
-   add ClusterType field in MembershipEndpoint.OnPremCluster ([513887b](https://togithub.com/googleapis/java-gkehub/commit/513887bb1f89d61da43717c4fcb0b841336afdd2))
-   add EdgeCluster as a new membershipEndpoint type ([513887b](https://togithub.com/googleapis/java-gkehub/commit/513887bb1f89d61da43717c4fcb0b841336afdd2))
-   Enable REST transport for most of Java and Go clients ([#&#8203;237](https://togithub.com/googleapis/java-gkehub/issues/237)) ([513887b](https://togithub.com/googleapis/java-gkehub/commit/513887bb1f89d61da43717c4fcb0b841336afdd2))

##### Bug Fixes

-   update gapic-generator-java with mock service generation fixes ([#&#8203;249](https://togithub.com/googleapis/java-gkehub/issues/249)) ([41f6804](https://togithub.com/googleapis/java-gkehub/commit/41f6804851c718a6714d2d41d0094b1e9cc8136f))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -469,7 +469,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-gkehub-bom</artifactId>
-        <version>1.2.1</version>
+        <version>1.3.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>