chore: Address Style/RedundantParentheses (open-telemetry#1499)

Rubocop 1.75.3 came out on 22 April. Our Gemfile is set to install new
patch versions automatically. This cop started failing after the update
with the message: Don't use parentheses around a method argument.

Author: kaylareopelle

instrumentation/active_job/lib/opentelemetry/instrumentation/active_job/handlers/default.rb

@@ -60,7 +60,7 @@ def finish(_name, _id, payload)
             span = otel&.fetch(:span)
             token = otel&.fetch(:ctx_token)
 
-            on_exception((payload[:error] || payload[:exception_object]), span)
+            on_exception(payload[:error] || payload[:exception_object], span)
           rescue StandardError => e
             OpenTelemetry.handle_error(exception: e)
           ensure