Increase pg_ctl timeout when running with code coverage

We get random timeouts from pg_ctl in the coverage build only so let's
increase the timeout from 60 to 120 seconds. These timeouts might
indicate that we have some issue with recovery being too slow in general
but for now let's just increase the timeout to avoid random test
failures.

.github/workflows/coverage.yml

@@ -5,6 +5,9 @@ on:
     branches:
       - TDE_REL_17_STABLE
 
+env:
+  PGCTLTIMEOUT: 120 # Avoid failures on slow recovery
+
 jobs:
   collect:
     name: Collect and upload