k8s: fetch-worker: increase max memory per child

This will avoid error messages when workers exceed that limit.

Signed-off-by: Charles Oliveira <charles.oliveira@linaro.org>

Author: chaws

k8s/qareports-fetch-worker.yml

@@ -65,7 +65,7 @@ spec:
         args:
         - --queues=ci_fetch
         - --concurrency=1
-        - --max-memory-per-child=2000000
+        - --max-memory-per-child=2500000
         - --without-mingle
         - --without-gossip