Merge pull request #896 from rabbitmq/dependabot/maven/5.x.x-stable/opentelemetry.version-1.21.0

Bump opentelemetry.version from 1.20.1 to 1.21.0

References #848

Author: acogoluegnes

pom.xml

@@ -57,7 +57,7 @@
     <slf4j.version>1.7.36</slf4j.version>
     <metrics.version>4.2.13</metrics.version>
     <micrometer.version>1.10.2</micrometer.version>
-    <opentelemetry.version>1.20.1</opentelemetry.version>
+    <opentelemetry.version>1.21.0</opentelemetry.version>
     <jackson.version>2.14.1</jackson.version>
     <logback.version>1.2.11</logback.version>
     <junit.version>4.13.2</junit.version>