fix(prisma): cleanup expiry timeout when process exits to prevent memory leak

[0xturner]

I noticed my app had hanging child processes when shutting down after introducing RateLimiterPrisma. Tracked it down to this timeout handler which is not being cleaned up

[squirly]

An alternative would be to add a function that allows cleaning up this object/stopping the clearing. Possibly RateLimiterPrisma#close or RateLimiterPrisma#stopClearExpired. Updated implementation is a better approach.

[0xturner]

Looks like this was already being handled in other adaptors, just missing from the Prisma one. Changed to be consistent with approach here

[animir]

@0xturner Good catch. Thank you. It was released in v 5.0.5.