deps: google-cloud-pubsublite-parent to the latest (#507)

* deps: google-cloud-pubsublite-parent to the latest

The latest google-cloud-pubsublite-parent has the profile to turn
off nexus-staging-maven-plugin. This profile is needed ot adopt
Central Portal migration.

* Declare used dependencies

* flogger version

Author: suztomo

pom.xml

@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsublite-parent</artifactId>
-    <version>1.14.6</version>
+    <version>1.15.9</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>

pubsublite-kafka/pom.xml

@@ -54,6 +54,16 @@
       <groupId>com.google.auto.value</groupId>
       <artifactId>auto-value-annotations</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.flogger</groupId>
+      <artifactId>flogger</artifactId>
+      <version>0.8</version>
+    </dependency>
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax-grpc</artifactId>
+    </dependency>
+
     <!--test dependencies-->
     <dependency>
       <groupId>junit</groupId>