deps: bump libraries-bom version (#3046)

Author: stephaniewang526

automl/cloud-client/pom.xml

@@ -40,7 +40,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>5.2.0</version>
+        <version>5.5.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>