Heretic is now considered an equal threat level to changeling (#90146)

## About The Pull Request

This adjusts the threat level for Heretic for the dynamic game mode to
have them cost as much as a changeling to be chosen. As well, it adjusts
the weighting for heretic latejoin from 8 to 4.
## Why It's Good For The Game

Heretic threat, as it is, is stupendously under-valued in relation to
our other antagonist threats. Heretic is regularly a round-ending threat
and their current threat level is totally inaccurate.
## Changelog
N/A

code/controllers/subsystem/dynamic/dynamic_rulesets_latejoin.dm

@@ -199,8 +199,8 @@
 		JOB_CYBORG,
 	)
 	required_candidates = 1
-	weight = 8
-	cost = 6
+	weight = 4
+	cost = 12
 	requirements = list(101,101,50,10,10,10,10,10,10,10)
 	repeatable = TRUE
 

code/controllers/subsystem/dynamic/dynamic_rulesets_roundstart.dm

@@ -211,7 +211,7 @@ GLOBAL_VAR_INIT(revolutionary_win, FALSE)
 	)
 	required_candidates = 1
 	weight = 3
-	cost = 10
+	cost = 16
 	scaling_cost = 9
 	requirements = list(101,101,60,30,30,25,20,15,10,10)
 	antag_cap = list("denominator" = 24)