feat(core): Add gibibyte and pebibyte to InformationUnit type

[Lms24]

Both of these units are supported by Relay, see https://getsentry.github.io/relay/relay_metrics/enum.InformationUnit.html.

(somewhat related to #18165. Happy to close if there's a reason why we didn't add them initially)

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	11,508	-	8,956	+28%
GET With Sentry	1,704	15%	1,397	+22%
GET With Sentry (error only)	7,799	68%	6,044	+29%
POST Baseline	1,199	-	1,213	-1%
POST With Sentry	565	47%	532	+6%
POST With Sentry (error only)	1,065	89%	1,076	-1%
MYSQL Baseline	4,053	-	3,383	+20%
MYSQL With Sentry	612	15%	546	+12%
MYSQL With Sentry (error only)	3,389	84%	2,796	+21%

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