Update memoffset requirement from 0.8.0 to 0.9.0 (CeleritasCelery#38)

Updates the requirements on [memoffset](https://github.com/Gilnaa/memoffset) to permit the latest version.
- [Changelog](https://github.com/Gilnaa/memoffset/blob/master/CHANGELOG.md)
- [Commits](Gilnaa/memoffset@v0.8.0...v0.9.0)

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

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Cargo.toml

@@ -21,7 +21,7 @@ fancy-regex = "0.12.0"
 float-cmp = "0.9.0"
 fn_macros = { version = "0.1.0", path = "fn_macros" }
 hostname = "0.3.1"
-memoffset = "0.8.0"
+memoffset = "0.9.0"
 num_enum = "0.7.1"
 paste = "1.0.12"
 rand = "0.8.5"