deps: update google.common-protos.version to v1.18.0 (#30)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.api.grpc:grpc-google-common-protos](https://togithub.com/googleapis/java-iam) | minor | `1.17.0` -> `1.18.0` |
| [com.google.api.grpc:proto-google-common-protos](https://togithub.com/googleapis/java-iam) | minor | `1.17.0` -> `1.18.0` |

---

### Renovate configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about these updates again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#googleapis/java-shared-dependencies).

Author: renovate-bot

pom.xml

@@ -60,7 +60,7 @@
     <guava.version>29.0-android</guava.version>
     <protobuf.version>3.11.4</protobuf.version>
     <google.api-common.version>1.9.0</google.api-common.version>
-    <google.common-protos.version>1.17.0</google.common-protos.version>
+    <google.common-protos.version>1.18.0</google.common-protos.version>
     <google.core.version>1.93.4</google.core.version>
     <google.auth.version>0.20.0</google.auth.version>
     <google.http-client.version>1.35.0</google.http-client.version>