[roll] Roll infra/recipes [python] Stop setting -u

Per https://crbug.com/1271425 this is very rarely necessary (only for
very long-running commands that produce minimal output, to prevent them
from being considered stuck by swarming). But all LUCI bots set the
`PYTHONUNBUFFERED` environment variable anyway, so unsetting the flag
won't have any effect on production.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/recipes/+/673458
Original-Revision: 7592c193b6e2e5df569f86534187c489288f6fd5
GitOrigin-RevId: 34cc82dff64d127a7ade0b885c8b96a2ffa929a3
Change-Id: I212519efd1dea8b33527557720f6e7cfc5f6248c
diff --git a/infra/recipes b/infra/recipes
index ea74d76..f377c2c 100644
--- a/infra/recipes
+++ b/infra/recipes
@@ -11,6 +11,6 @@
              path="infra/recipes"
              remote="https://fuchsia.googlesource.com/infra/recipes"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="fc4e9ecfe8f283bb80ad47b507d08d045863bb5a"/>
+             revision="7592c193b6e2e5df569f86534187c489288f6fd5"/>
   </projects>
 </manifest>