chore(deps): update dependency com.google.cloud:google-cloud-api-gate…

…way to v2.3.0 (#283)

[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-api-gateway](https://github.com/googleapis/java-api-gateway) | `2.2.1` -> `2.3.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-api-gateway/2.3.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-api-gateway/2.3.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-api-gateway/2.3.0/compatibility-slim/2.2.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-api-gateway/2.3.0/confidence-slim/2.2.1)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-api-gateway</summary>

### [`v2.3.0`](https://github.com/googleapis/java-api-gateway/blob/HEAD/CHANGELOG.md#&#8203;230-httpsgithubcomgoogleapisjava-api-gatewaycomparev221v230-2022-07-01)

[Compare Source](https://github.com/googleapis/java-api-gateway/compare/v2.2.1...v2.3.0)

##### Features

-   Enable REST transport for most of Java and Go clients ([#&#8203;262](https://github.com/googleapis/java-api-gateway/issues/262)) ([8802c84](https://github.com/googleapis/java-api-gateway/commit/8802c840d87c0ccbb5271054b94b4068ae8eae86))

##### Bug Fixes

-   update gapic-generator-java with mock service generation fixes ([#&#8203;269](https://github.com/googleapis/java-api-gateway/issues/269)) ([4de2039](https://github.com/googleapis/java-api-gateway/commit/4de20392815441cc04d77725294d7f9ba7142181))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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

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

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

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

---

This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/java-api-gateway).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzMi4xMzUuMSIsInVwZGF0ZWRJblZlciI6IjMyLjEzNS4xIn0=-->

java-api-gateway/samples/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-api-gateway</artifactId>
-      <version>2.2.1</version>
+      <version>2.3.0</version>
     </dependency>
     <!-- [END api-gateway_install_without_bom] -->
 

java-api-gateway/samples/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-api-gateway</artifactId>
-      <version>2.2.1</version>
+      <version>2.3.0</version>
     </dependency>
   <!-- {x-version-update-end} -->
 

java-api-gateway/samples/snippets/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-api-gateway</artifactId>
-      <version>2.2.1</version>
+      <version>2.3.0</version>
     </dependency>
 
     <dependency>