Check tests more for flakyness

.circleci/config.yml

@@ -539,7 +539,7 @@ jobs:
 
   test-flakyness:
     description: Runs a test multiple times to see if it's flaky
-    parallelism: 32
+    parallelism: 64
     parameters:
       pg_major:
         description: 'postgres major version'
@@ -561,7 +561,7 @@ jobs:
       runs:
         description: 'number of times that the test should be run in total'
         type: integer
-        default: 1600
+        default: 2400
     docker:
       - image: '<< parameters.image >>:<< parameters.image_tag >><< pipeline.parameters.image_suffix >>'
     working_directory: /home/circleci/project