chore(deps): update dependency com.google.cloud:google-cloud-retail to v2.5.2 (#584)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-retail](https://togithub.com/googleapis/java-retail) ([source](https://togithub.com/googleapis/java-)) | `2.5.1` -> `2.5.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-retail/2.5.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-retail/2.5.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-retail/2.5.2/compatibility-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-retail/2.5.2/confidence-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) |

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retail/interactive-tutorials/pom.xml

@@ -42,7 +42,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-retail</artifactId>
-      <version>2.5.1</version>
+      <version>2.5.2</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>