Readjusted kepori whistle and click volume (#3126)

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## About The Pull Request

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Readjusted kepori whistle and click volume. Whistle also now varies in
pitch.

## Why It's Good For The Game

Less ear bleed

## Changelog

:cl:
fix: Dialed down the loudness of a couple Kepori sounds
fix: Kepori wooping now has the audible flag.
fix: Whistling now varies in pitch
/:cl:

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code/modules/mob/living/carbon/human/emote.dm

@@ -346,6 +346,7 @@
 	key_third_person = "whistles"
 	message = "whistles!"
 	emote_type = EMOTE_AUDIBLE
+	vary = TRUE
 
 /datum/emote/living/carbon/human/kepiwhistle/get_sound(mob/living/user)
 	if(!ishuman(user))
@@ -357,3 +358,4 @@
 	key = "woop"
 	key_third_person = "woops"
 	message = "woops!"
+	emote_type = EMOTE_AUDIBLE