deps: Update OpenCensus packages to v0.23.0 (#789)

Author: renovate-bot

pom.xml

@@ -537,7 +537,7 @@
     <project.commons-logging.version>1.2</project.commons-logging.version>
     <project.httpclient.version>4.5.9</project.httpclient.version>
     <project.httpcore.version>4.4.11</project.httpcore.version>
-    <project.opencensus.version>0.21.0</project.opencensus.version>
+    <project.opencensus.version>0.23.0</project.opencensus.version>
     <project.root-directory>..</project.root-directory>
     <deploy.autorelease>false</deploy.autorelease>
   </properties>