deps: update dependency com.google.cloud:google-iam-policy to v1.11.0 (#1505)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-iam-policy](https://togithub.com/googleapis/google-cloud-java) | `1.9.4-SNAPSHOT` -> `1.11.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-iam-policy/1.11.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-iam-policy/1.11.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-iam-policy/1.11.0/compatibility-slim/1.9.4-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-iam-policy/1.11.0/confidence-slim/1.9.4-SNAPSHOT)](https://docs.renovatebot.com/merge-confidence/) |

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java-iam/pom.xml

@@ -98,7 +98,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-iam-policy</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:google-iam-policy:current} -->
+        <version>1.11.0</version><!-- {x-version-update:google-iam-policy:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>