deps: update dependency com.google.api.grpc:proto-google-iam-v1 to v1…

….6.1 (#926)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:proto-google-iam-v1](https://togithub.com/googleapis/java-iam/proto-google-iam-v1) ([source](https://togithub.com/googleapis/java-iam)) | `1.6.0` -> `1.6.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.1/compatibility-slim/1.6.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.1/confidence-slim/1.6.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v1.6.1`](https://togithub.com/googleapis/java-iam/blob/HEAD/CHANGELOG.md#&#8203;161-httpsgithubcomgoogleapisjava-iamcomparev160v161-2022-09-21)

[Compare Source](https://togithub.com/googleapis/java-iam/compare/v1.6.0...v1.6.1)

##### Dependencies

-   Update dependency com.google.protobuf:protobuf-java to v3.21.6 ([#&#8203;425](https://togithub.com/googleapis/java-iam/issues/425)) ([61cbdf4](https://togithub.com/googleapis/java-iam/commit/61cbdf4c4ad3c559670cc39c864dfd03f8303667))

</details>

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java-core/pom.xml

@@ -154,7 +154,7 @@
     <gax.version>2.19.1</gax.version>
     <google.api-common.version>2.2.1</google.api-common.version>
     <google.common-protos.version>2.9.3</google.common-protos.version>
-    <google.iam.version>1.6.0</google.iam.version>
+    <google.iam.version>1.6.1</google.iam.version>
     <google.auth.version>1.11.0</google.auth.version>
     <google.api.version>2.0.0</google.api.version>
     <google.http.version>1.42.2</google.http.version>