ops-catalog: add minTxnDuration to two tasks

Update the committed specs to reflect what's already in production.

Author: jgraettinger

ops-catalog/schema-inference.flow.yaml

@@ -28,6 +28,8 @@ collections:
               $fields->>'collection_name' as collection_name,
               $fields->'schema' as schema
             where $message = 'inferred schema updated';
+      shards:
+        minTxnDuration: 10s
 
   # A direct-copy of L1, but enables us to add more L1s
   # as we create more data planes.

ops-catalog/task-failures.flow.yaml

@@ -62,6 +62,8 @@ collections:
           source: ops.us-central1.v1/logs
           readDelay: 48h
           lambda: DELETE FROM failures WHERE shard = $name AND ts=$ts; DELETE FROM failure_notifications WHERE shard = $name AND ts=$ts;
+      shards:
+        minTxnDuration: 10s
     projections:
       ts: /ts
       task_name: /task_name