deps: update dependency com.google.cloud.opentelemetry:exporter-metrics to v0.28.0

Author: renovate-bot

benchmarks/pom.xml

@@ -54,7 +54,7 @@
     <dependency>
       <groupId>com.google.cloud.opentelemetry</groupId>
       <artifactId>exporter-metrics</artifactId>
-      <version>0.25.2</version>
+      <version>0.28.0</version>
     </dependency>
     <!-- OpenTelemetry test dependencies -->
     <dependency>