Update validation messages with correct max length

[KartikSoneji]

The validation messages for the location and position fields are inconsistent.
This PR fixes that.

evental/shared/utils/schema.ts

Line 88 in bca0320

location: z.string().max(100, 'Location must be less than 70 characters'),

evental/shared/utils/schema.ts

Lines 94 to 97 in bca0320

	position: z.preprocess(
	trimString,
	z.string().max(100, 'Position must be less than 70 characters')
	),

[vercel]

@KartikSoneji is attempting to deploy a commit to the Evental Team on Vercel.

A member of the Team first needs to authorize it.