deps: update dependency io.grpc:grpc-protobuf to v1.45.0 (#310)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.grpc:grpc-protobuf](https://github.com/grpc/grpc-java) | `1.44.1` -> `1.45.0` | [![age](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-protobuf/1.45.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-protobuf/1.45.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-protobuf/1.45.0/compatibility-slim/1.44.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.grpc:grpc-protobuf/1.45.0/confidence-slim/1.44.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>grpc/grpc-java</summary>

### [`v1.45.0`](https://github.com/grpc/grpc-java/releases/v1.45.0)

##### gRPC Java 1.45.0 Release Notes

##### Bug Fixes

-   rls: fix child lb leak when client channel is shutdown ([#&#8203;8750](https://github.com/grpc/grpc-java/issues/8750))
-   rls: fix RLS lb policy name ([#&#8203;8867](https://github.com/grpc/grpc-java/issues/8867))
-   testing: fix GrpcCleanupRule issue when retrying tests ([#&#8203;8918](https://github.com/grpc/grpc-java/issues/8918))
-   xds: fix validation code to accept new-style CertificateProviderPluginInstance ([#&#8203;8892](https://github.com/grpc/grpc-java/issues/8892))
-   xds: fix a concurrency issue in CSDS ClientStatus responses ([#&#8203;8795](https://github.com/grpc/grpc-java/issues/8795))
-   bom: Include grpc-binder
-   binder: Fix a ServiceConnection leak ([#&#8203;8861](https://github.com/grpc/grpc-java/issues/8861))
-   binder: Increase fairness across streams when limited by flow control. This can dramatically reduce latency when channel is being used for high throughput ([#&#8203;8835](https://github.com/grpc/grpc-java/issues/8835))
-   android: fix for app coming to foreground ([#&#8203;8855](https://github.com/grpc/grpc-java/issues/8855))

##### Behavior Changes

-   Local-only transparent retry is (practically) unlimited now. Previously it was at most once per RPC.
-   xds: implement least_request load balancing policy ([#&#8203;8739](https://github.com/grpc/grpc-java/issues/8739))

##### Dependencies

-   Bump Error Prone Annotations to 2.10.0
-   Bump Guava to 31.0.1-android
-   Bump Google Auth Library to 1.4.0
-   Bump Auto Value to 1.9
-   netty: Include both x86 and Arm64 epoll as dependency for grpc-netty-shaded
-   testing: remove opencensus dependency from grpc-testing ([#&#8203;8833](https://github.com/grpc/grpc-java/issues/8833))

</details>

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java-iam/grpc-google-iam-v1/build.gradle

@@ -19,7 +19,7 @@ repositories {
 
 dependencies {
   compile 'io.grpc:grpc-stub:1.45.0'
-  compile 'io.grpc:grpc-protobuf:1.44.1'
+  compile 'io.grpc:grpc-protobuf:1.45.0'
   compile project(':proto-google-iam-v1')
 }