deps: update dependency com.google.cloud:google-cloud-webrisk-bom to v2.2.0 (#4630)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-webrisk-bom](https://togithub.com/googleapis/java-webrisk) | `2.1.1` -> `2.2.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-webrisk-bom/2.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-webrisk-bom/2.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-webrisk-bom/2.2.0/compatibility-slim/2.1.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-webrisk-bom/2.2.0/confidence-slim/2.1.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.2.0`](https://togithub.com/googleapis/java-webrisk/blob/HEAD/CHANGELOG.md#&#8203;220-httpsgithubcomgoogleapisjava-webriskcomparev211v220-2022-07-01)

[Compare Source](https://togithub.com/googleapis/java-webrisk/compare/v2.1.1...v2.2.0)

##### Features

-   Enable REST transport for most of Java and Go clients ([#&#8203;669](https://togithub.com/googleapis/java-webrisk/issues/669)) ([a9b4f58](https://togithub.com/googleapis/java-webrisk/commit/a9b4f581dfc8b6c5106db0a8ff774456849beb37))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -880,7 +880,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-webrisk-bom</artifactId>
-        <version>2.1.1</version>
+        <version>2.2.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>