deps: update iam.version to v1.6.6 (#886)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:grpc-google-iam-v1](https://github.com/googleapis/java-iam/grpc-google-iam-v1) ([source](https://github.com/googleapis/java-iam)) | `1.6.4` -> `1.6.6` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-iam-v1/1.6.6/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-iam-v1/1.6.6/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-iam-v1/1.6.6/compatibility-slim/1.6.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-iam-v1/1.6.6/confidence-slim/1.6.4)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.api.grpc:proto-google-iam-v1](https://github.com/googleapis/java-iam/proto-google-iam-v1) ([source](https://github.com/googleapis/java-iam)) | `1.6.4` -> `1.6.6` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.6/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.6/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.6/compatibility-slim/1.6.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-iam-v1/1.6.6/confidence-slim/1.6.4)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v1.6.6`](https://github.com/googleapis/java-iam/blob/HEAD/CHANGELOG.md#&#8203;166-httpsgithubcomgoogleapisjava-iamcomparev165v166-2022-10-25)

[Compare Source](https://github.com/googleapis/java-iam/compare/v1.6.5...v1.6.6)

##### Dependencies

-   Update dependency com.google.cloud:google-iam-policy to v1.6.5 ([#&#8203;489](https://github.com/googleapis/java-iam/issues/489)) ([ab8be40](https://github.com/googleapis/java-iam/commit/ab8be4088259b25799aa5df0e7cfe944a7da7956))

### [`v1.6.5`](https://github.com/googleapis/java-iam/blob/HEAD/CHANGELOG.md#&#8203;165-httpsgithubcomgoogleapisjava-iamcomparev164v165-2022-10-24)

[Compare Source](https://github.com/googleapis/java-iam/compare/v1.6.4...v1.6.5)

##### Dependencies

-   Update dependency com.google.apis:google-api-services-cloudresourcemanager to v3-rev20221016-2.0.0 ([#&#8203;479](https://github.com/googleapis/java-iam/issues/479)) ([728084c](https://github.com/googleapis/java-iam/commit/728084cba18609a511dd04d67a59a8b0a4c2a63d))
-   Update dependency com.google.auth:google-auth-library-oauth2-http to v1.12.1 ([#&#8203;478](https://github.com/googleapis/java-iam/issues/478)) ([94e2ca1](https://github.com/googleapis/java-iam/commit/94e2ca1930ec67bf1d837e044c8a72d64b6eae45))
-   Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.0.5 ([#&#8203;486](https://github.com/googleapis/java-iam/issues/486)) ([292042e](https://github.com/googleapis/java-iam/commit/292042ea315d3bff5b07e86b73d82fa290364a8a))
-   Update dependency com.google.cloud:google-iam-policy to v1.6.4 ([#&#8203;475](https://github.com/googleapis/java-iam/issues/475)) ([b86f46c](https://github.com/googleapis/java-iam/commit/b86f46cd9115b5d07d867766e37d402d054768a2))
-   Update dependency com.google.protobuf:protobuf-bom to v3.21.8 ([#&#8203;481](https://github.com/googleapis/java-iam/issues/481)) ([cb74130](https://github.com/googleapis/java-iam/commit/cb741301c1add6eb5e790de44caa7961e2ea055d))
-   Update dependency com.google.protobuf:protobuf-java to v3.21.8 ([#&#8203;482](https://github.com/googleapis/java-iam/issues/482)) ([176de6c](https://github.com/googleapis/java-iam/commit/176de6cb499db8fde987f69df35038d9872fad25))
-   Update dependency io.grpc:grpc-protobuf to v1.50.0 ([#&#8203;476](https://github.com/googleapis/java-iam/issues/476)) ([358383f](https://github.com/googleapis/java-iam/commit/358383fef13874226454c05464a615651ec5b0fb))
-   Update dependency io.grpc:grpc-protobuf to v1.50.2 ([#&#8203;483](https://github.com/googleapis/java-iam/issues/483)) ([3c9999b](https://github.com/googleapis/java-iam/commit/3c9999b9b4daca5aa343005ca89055f7172ba2dc))
-   Update dependency io.grpc:grpc-stub to v1.50.2 ([#&#8203;477](https://github.com/googleapis/java-iam/issues/477)) ([e2255ec](https://github.com/googleapis/java-iam/commit/e2255ecfe43a7aef250802cd1829771d4b3691d8))

</details>

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java-shared-dependencies/first-party-dependencies/pom.xml

@@ -68,7 +68,7 @@
     <google.http-client.version>1.42.2</google.http-client.version>
     <google.oauth-client.version>1.34.1</google.oauth-client.version>
     <google.api-client.version>2.0.0</google.api-client.version>
-    <iam.version>1.6.4</iam.version>
+    <iam.version>1.6.6</iam.version>
   </properties>
 
   <dependencyManagement>