Raises Sarathi max age to 175. (#2959)

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## About The Pull Request
Title.
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## Why It's Good For The Game
Quoting [the wiki](https://shiptest.net/wiki/Sarathi), 
> Sarathi have a longer lifespan than humans, with the oldest typically
reaching 175 years old.

I assume lore people forgor to update it code-wise.

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## Changelog

:cl:
tweak: Sarathi max age is now 175.
/:cl:

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code/modules/mob/living/carbon/human/species_types/lizardpeople.dm

@@ -3,6 +3,7 @@
 	name = "\improper Sarathi"
 	id = SPECIES_SARATHI
 	default_color = "00FF00"
+	species_age_max = 175
 	species_traits = list(MUTCOLORS,EYECOLOR,LIPS,SCLERA,EMOTE_OVERLAY,MUTCOLORS_SECONDARY)
 	inherent_biotypes = MOB_ORGANIC|MOB_HUMANOID|MOB_REPTILE
 	mutant_bodyparts = list("tail_lizard", "face_markings", "frills", "horns", "spines", "body_markings", "legs")