fix(ci): Increase timeout to 6 seconds on restart tests

When fingerprints are missing, it takes much longer to run these
tests, and 3 seconds may not be long enough to exit on slower
runners

Author: sgillespie

cardano-chain-gen/test/Test/Cardano/Db/Mock/Unit/Conway/CommandLineArg/MigrateConsumedPruneTxOut.hs

@@ -390,7 +390,7 @@ migrateAndPruneRestart =
         newEnv = dbSync {dbSyncParams = newParams}
     startDBSync newEnv
     -- There is a slight delay before the flag is checked
-    threadDelay 3_000_000
+    threadDelay 6_000_000
     -- Expected to fail
     checkStillRuns dbSync
   where
@@ -419,7 +419,7 @@ pruneRestartMissingFlag =
         newEnv = dbSync {dbSyncParams = newParams}
     startDBSync newEnv
     -- There is a slight delay before the flag is checked
-    threadDelay 3_000_000
+    threadDelay 6_000_000
     -- Expected to fail
     checkStillRuns dbSync
   where
@@ -448,7 +448,7 @@ bootstrapRestartMissingFlag =
         newEnv = dbSync {dbSyncParams = newParams}
     startDBSync newEnv
     -- There is a slight delay befor the flag is checked
-    threadDelay 3_000_000
+    threadDelay 6_000_000
     -- Expected to fail
     checkStillRuns dbSync
   where