Update memmap2 requirement from =0.9.2 to =0.9.3

Updates the requirements on [memmap2](https://github.com/RazrFalcon/memmap2-rs) to permit the latest version.
- [Changelog](https://github.com/RazrFalcon/memmap2-rs/blob/master/CHANGELOG.md)
- [Commits](RazrFalcon/memmap2-rs@v0.9.2...v0.9.3)

---
updated-dependencies:
- dependency-name: memmap2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -26,7 +26,7 @@ exclude = [
 
 [dependencies]
 hifitime = "3.8.6"
-memmap2 = "=0.9.2"
+memmap2 = "=0.9.3"
 crc32fast = "=1.3.2"
 der = { version = "0.7.8", features = ["derive", "alloc", "real"] }
 clap = { version = "4", features = ["derive"] }