chore(deps): update dependency com.google.cloud:libraries-bom to v19 (#…

…1311)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://togithub.com/GoogleCloudPlatform/cloud-opensource-java) | `18.0.0` -> `19.0.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.0.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.0.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.0.0/compatibility-slim/18.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.0.0/confidence-slim/18.0.0)](https://docs.renovatebot.com/merge-confidence/) |

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samples/snippets/pom.xml

@@ -31,7 +31,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>18.0.0</version>
+        <version>19.0.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>