build(deps): downgrade memmap2 to 0.5.10

Author: birchkwok

Cargo.toml

@@ -32,7 +32,7 @@ tempfile = "3.8.1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 rayon = { version = "1.8", optional = true }
-memmap2 = "0.5.20"
+memmap2 = "0.5.10"
 half = { version = "2.6.0", features = ["bytemuck"] }
 bitvec = "1.0.1"
 bincode = "1.3"