Fix at mention in operator pr (#6630)

.github/workflows/reusable-create-operator-pull-request.yml

@@ -53,9 +53,12 @@ jobs:
           VERSION: ${{ inputs.version }}
         run: |
           message="Update the javaagent version to $VERSION"
+          # note that @open-telemetry/java-instrumentation-approvers cannot be used below
+          # because opentelemetrybot is not a member of the OpenTelemetry org,
+          # and so it cannot @ mention OpenTelemetry org groups
           body="Update the javaagent version to \`$VERSION\`.
 
-          cc @open-telemetry/java-instrumentation-approvers
+          cc @laurit @mateuszrzeszutek @trask
           "
 
           # gh pr create doesn't have a way to explicitly specify different head and base