fix(metrics): Bump generic extraction version

[jjbayer]

External relays of version 23.9.1 (and possibly below) set the metrics_extracted flag on transaction items even if transaction metrics extraction is disabled:

relay/relay-server/src/actors/processor.rs

Lines 2099 to 2104 in ffebe60

	let metrics = crate::metrics_extraction::event::extract_metrics(event, config);
	state.event_metrics_extracted |= !metrics.is_empty();
	state.extracted_metrics.project_metrics.extend(metrics);
	}
	match state.project_state.config.transaction_metrics {

We recently bumped the transaction metrics version, causing external relays to skip extraction. But because old external relays set the metrics_extracted flag anyway, even our internal PoPs skip metrics extraction now.

This PR is a one-time fix to force old external relays to stop extracting generic metrics as well.