chore(deps): update dependency com.google.cloud:libraries-bom to v20.…

…9.0 (googleapis#552)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://github.com/GoogleCloudPlatform/cloud-opensource-java) | `20.8.0` -> `20.9.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.9.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.9.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.9.0/compatibility-slim/20.8.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.9.0/confidence-slim/20.8.0)](https://docs.renovatebot.com/merge-confidence/) |

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java-resourcemanager/README.md

@@ -22,7 +22,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>20.8.0</version>
+      <version>20.9.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>

java-resourcemanager/samples/snippets/pom.xml

@@ -30,7 +30,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>20.8.0</version>
+        <version>20.9.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>