Bump PGversions for CI tests (#6969)

Postgres got minor updates in May, this starts using the images with the
latest version for our tests.

These new Postgres versions didn't cause any compilation issues or test
failures.

Depends on https://github.com/citusdata/the-process/pull/136

.circleci/config.yml

@@ -6,19 +6,19 @@ orbs:
 parameters:
   image_suffix:
     type: string
-    default: '-vabeb997'
+    default: '-vf5dc39a'
   pg13_version:
     type: string
-    default: '13.10'
+    default: '13.11'
   pg14_version:
     type: string
-    default: '14.7'
+    default: '14.8'
   pg15_version:
     type: string
-    default: '15.2'
+    default: '15.3'
   upgrade_pg_versions:
     type: string
-    default: '13.10-14.7-15.2'
+    default: '13.11-14.8-15.3'
   style_checker_tools_version:
     type: string
     default: '0.8.18'