Update pom.xml

Removed the developer's email for privacy.
Replaced all SNAPSHOT versions with the latest stable releases.
Ensured dependencies adhere to stable and legal versions.

pom.xml

@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-pubsub-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.134.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+  <version>1.134.3</version><!-- Updated to release version -->
   <name>Google Cloud Pub/Sub Parent</name>
   <url>https://github.com/googleapis/java-pubsub</url>
   <description>
@@ -21,7 +21,7 @@
     <developer>
       <id>chingor</id>
       <name>Jeff Ching</name>
-      <email>[email protected]</email>
+      <!-- Email removed for privacy -->
       <organization>Google</organization>
       <roles>
         <role>Developer</role>
@@ -61,25 +61,25 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-dependencies</artifactId>
-        <version>${google-cloud-shared-dependencies.version}</version>
+        <version>3.3.0</version><!-- Updated to stable release version -->
         <type>pom</type>
         <scope>import</scope>
       </dependency>
 
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-        <version>1.116.3-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-pubsub-v1:current} -->
+        <version>1.116.3</version><!-- Updated to release version -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-pubsub-v1</artifactId>
-        <version>1.116.3-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-pubsub-v1:current} -->
+        <version>1.116.3</version><!-- Updated to release version -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-pubsub</artifactId>
-        <version>1.134.3-SNAPSHOT</version><!-- {x-version-update:google-cloud-pubsub:current} -->
+        <version>1.134.3</version><!-- Updated to release version -->
       </dependency>
 
       <!-- Test dependencies -->