fix: update pom to add comment (#378)

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Fixes #<issue_number_goes_here> ☕️

If you write sample code, please follow the [samples format](
https://togithub.com/GoogleCloudPlatform/java-docs-samples/blob/main/SAMPLE_FORMAT.md).

Author: dpcollins-google

samples/snapshot/pom.xml

@@ -39,23 +39,21 @@
   </properties>
 
   <dependencies>
-    <!-- {x-version-update-start:pubsublite-kafka:current} -->
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>pubsublite-kafka</artifactId>
-      <version>1.0.5-SNAPSHOT</version>
+      <version>1.0.5-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>pubsublite-kafka-auth</artifactId>
-      <version>1.0.5-SNAPSHOT</version>
+      <version>1.0.5-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
       <version>2.14.1</version>
     </dependency>
-    <!-- {x-version-update-end} -->
     <dependency>
       <groupId>org.apache.kafka</groupId>
       <artifactId>kafka-clients</artifactId>