update hashbrown to v0.15.1 (bytecodealliance#1905)

Also remove `ahash` and use hashbrown's `default-hasher` crate feature as replacement. This allows to drop yet another `wasmparser` dependency.

Cargo.toml

@@ -89,7 +89,7 @@ semver = { version = "1.0.0", default-features = false }
 smallvec = "1.11.1"
 libtest-mimic = "0.7.0"
 bitflags = "2.5.0"
-hashbrown = { version = "0.14.3", default-features = false, features = ['ahash'] }
+hashbrown = { version = "0.15.1", default-features = false, features = ['default-hasher'] }
 ahash = { version = "0.8.11", default-features = false }
 termcolor = "1.2.0"
 indoc = "2.0.5"

crates/wasmparser/Cargo.toml

@@ -24,7 +24,6 @@ bitflags = "2.4.1"
 indexmap = { workspace = true, optional = true }
 semver = { workspace = true, optional = true }
 hashbrown = { workspace = true, optional = true }
-ahash = { workspace = true, optional = true }
 serde = { workspace = true, optional = true }
 
 [dev-dependencies]
@@ -52,12 +51,11 @@ std = ['indexmap?/std']
 
 # Tells the `wasmparser` crate to provide (and use) hash-based collections internally.
 #
-# Disabling this crate feature allows to drop `hashbrown`, `indexmap` and `ahash` dependencies
+# Disabling this crate feature allows to drop `hashbrown`, `indexmap` dependencies
 # entirely, reducing compilation times and shrink binary sizes.
 hash-collections = [
   'dep:hashbrown',
   'dep:indexmap',
-  'dep:ahash',
 ]
 # Tells the `wasmparser` crate to prefer using its built-in btree-based collections 
 # even if `hash-collections` is enabled.

crates/wasmparser/src/collections/hash.rs

@@ -97,24 +97,24 @@ use std::collections::hash_map::RandomState as RandomStateImpl;
 #[derive(Clone, Debug)]
 #[cfg(not(feature = "std"))]
 struct RandomStateImpl {
-    state: ahash::RandomState,
+    state: hashbrown::DefaultHashBuilder,
 }
 
 #[cfg(not(feature = "std"))]
 impl Default for RandomStateImpl {
     fn default() -> RandomStateImpl {
         RandomStateImpl {
-            state: ahash::RandomState::new(),
+            state: hashbrown::DefaultHashBuilder::default(),
         }
     }
 }
 
 #[cfg(not(feature = "std"))]
 impl BuildHasher for RandomStateImpl {
-    type Hasher = ahash::AHasher;
+    type Hasher = <hashbrown::DefaultHashBuilder as BuildHasher>::Hasher;
 
     #[inline]
-    fn build_hasher(&self) -> ahash::AHasher {
+    fn build_hasher(&self) -> Self::Hasher {
         self.state.build_hasher()
     }
 }