deps: update dependency com.google.cloud:google-cloud-trace to v2.81.0 (googleapis#2332)

Author: renovate-bot

java-spanner-jdbc/pom.xml

@@ -221,7 +221,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-trace</artifactId>
-      <version>2.80.0</version>
+      <version>2.81.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>