deps: update opencensus.version to v0.26.0 (#115)

Author: renovate-bot

java-pubsub/pom.xml

@@ -78,7 +78,7 @@
     <http-client-bom.version>1.34.2</http-client-bom.version>
     <animal-sniffer.version>1.18</animal-sniffer.version>
     <autovalue.version>1.7</autovalue.version>
-    <opencensus.version>0.25.0</opencensus.version>
+    <opencensus.version>0.26.0</opencensus.version>
   </properties>
 
   <dependencyManagement>