chore(deps): update dependency com.google.cloud:libraries-bom to v26.2.0 (#575)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://cloud.google.com/java/docs/bom) ([source](https://togithub.com/googleapis/java-cloud-bom)) | `26.1.5` -> `26.2.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.2.0/compatibility-slim/26.1.5)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.2.0/confidence-slim/26.1.5)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

samples/cloud-client/snippets/pom.xml

@@ -73,7 +73,7 @@
         <groupId>com.google.cloud</groupId>
         <scope>import</scope>
         <type>pom</type>
-        <version>26.1.5</version>
+        <version>26.2.0</version>
       </dependency>
     </dependencies>
   </dependencyManagement>