chore: fix all clippy warnings across workspace

crates/quicproquo-kt/src/proof.rs

@@ -95,6 +95,7 @@ fn recompute_root(leaf: [u8; 32], path: &[PathStep]) -> Result<[u8; 32], KtError
 }
 
 #[cfg(test)]
+#[allow(clippy::unwrap_used)]
 mod tests {
     use super::*;
     use crate::tree::MerkleLog;

crates/quicproquo-kt/src/tree.rs

@@ -182,6 +182,7 @@ fn largest_power_of_two_less_than(n: usize) -> usize {
 }
 
 #[cfg(test)]
+#[allow(clippy::unwrap_used)]
 mod tests {
     use super::*;