Update memmap2 to 0.9

Cargo.toml

@@ -22,7 +22,7 @@ thiserror = "1.0"
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"
 goblin = "0.8"
-memmap2 = "0.8"
+memmap2 = "0.9"
 
 [target.'cfg(any(target_os = "linux", target_os = "android"))'.dependencies]
 nix = { version = "0.27", default-features = false, features = [
@@ -46,7 +46,7 @@ mach2 = "0.4"
 # Minidump-processor is async so we need an executor
 futures = { version = "0.3", features = ["executor"] }
 minidump = "0.19"
-memmap2 = "0.8"
+memmap2 = "0.9"
 
 [target.'cfg(target_os = "macos")'.dev-dependencies]
 # We dump symbols for the `test` executable so that we can validate that minidumps