ducktape: extend timeout in timequery_test

The test sometimes fails to wait for retention to kick in within 1
minute in Kafka. Note that no Redpanda is involved, so this commit just
bumps the timeout.

Fixes redpanda-data#10140

(cherry picked from commit 3287249)

tests/rptest/tests/timequery_test.py

@@ -263,7 +263,7 @@ def start_offset():
             return next(rpk.describe_topic(topic.name)).start_offset
 
         wait_until(lambda: start_offset() > 0,
-                   timeout_sec=60,
+                   timeout_sec=120,
                    backoff_sec=5,
                    err_msg="Start offset did not advance")