deps: update OpenCensus API to 0.30.0 (#694)

Author: thiagotnunes

pom.xml

@@ -55,14 +55,15 @@
     <truth.version>1.1.3</truth.version>
     <mockito.version>4.2.0</mockito.version>
     <hamcrest.version>2.2</hamcrest.version>
+    <opencensus.version>0.30.0</opencensus.version>
   </properties>
 
   <dependencyManagement>
     <dependencies>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.16.0</version>
+        <version>6.17.3</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -73,6 +74,16 @@
         <type>pom</type>
         <scope>import</scope>
       </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-api</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
+      <dependency>
+        <groupId>io.opencensus</groupId>
+        <artifactId>opencensus-contrib-grpc-util</artifactId>
+        <version>${opencensus.version}</version>
+      </dependency>
     </dependencies>
   </dependencyManagement>
   <dependencies>