set trivial/leaf spans to debug level

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/utils/hash/sha256.rs

@@ -1,6 +1,6 @@
 use ring::{digest, digest::SHA256};
 
-#[tracing::instrument(skip_all)]
+#[tracing::instrument(skip_all, level = "debug")]
 pub(super) fn hash(keys: &[&[u8]]) -> Vec<u8> {
 	// We only hash the pdu's event ids, not the whole pdu
 	let bytes = keys.join(&0xFF);