Fix clippy lints from 1.83 beta (#3357)

As detected in nightly CI builds:

https://github.com/sourmash-bio/sourmash/actions/runs/11375982992/job/31647671463

src/core/src/ffi/utils.rs

@@ -273,7 +273,7 @@ impl From<String> for SourmashStr {
     }
 }
 
-impl<'a> From<&'a str> for SourmashStr {
+impl From<&str> for SourmashStr {
     fn from(string: &str) -> SourmashStr {
         SourmashStr::new(string)
     }

src/core/src/index/linear.rs

@@ -18,7 +18,6 @@ use crate::storage::SigStore;
 use crate::Result;
 
 /// Supports parallel search without a particular index.
-
 pub struct LinearIndex {
     collection: CollectionSet,
     template: Sketch,
@@ -313,7 +312,7 @@ impl Select for LinearIndex {
     }
 }
 
-impl<'a> Index<'a> for LinearIndex {
+impl Index<'_> for LinearIndex {
     type Item = SigStore;
 
     fn insert(&mut self, _node: Self::Item) -> Result<()> {

src/core/src/index/mod.rs

@@ -193,7 +193,7 @@ pub trait Index<'a> {
     */
 }
 
-impl<'a, N, L> Comparable<L> for &'a N
+impl<N, L> Comparable<L> for &N
 where
     N: Comparable<L>,
 {

src/core/src/index/revindex/disk_revindex.rs

@@ -416,7 +416,7 @@ impl RevIndexOps for RevIndex {
             // grab the specific intersection:
             // Calculate stats
             let (gather_result, isect) = calculate_gather_stats(
-                &orig_query,
+                orig_query,
                 query_mh,
                 match_sig,
                 match_size,

src/core/src/index/revindex/mem_revindex.rs

@@ -299,7 +299,7 @@ impl RevIndex {
     }
 }
 
-impl<'a> Index<'a> for RevIndex {
+impl Index<'_> for RevIndex {
     type Item = Signature;
 
     fn insert(&mut self, _node: Self::Item) -> Result<()> {

src/core/src/signature.rs

@@ -902,7 +902,7 @@ impl TryInto<KmerMinHash> for Signature {
                         None
                     }
                 })
-                .ok_or_else(|| Error::NoMinHashFound),
+                .ok_or(Error::NoMinHashFound),
             0 => Err(Error::EmptySignature),
             _ => Err(Error::MultipleSketchesFound),
         }