Update aes-gcm requirement from 0.9 to 0.10 (#25)

Updates the requirements on [aes-gcm](https://github.com/RustCrypto/AEADs) to permit the latest version.
- [Release notes](https://github.com/RustCrypto/AEADs/releases)
- [Commits](https://github.com/RustCrypto/AEADs/compare/aes-gcm-v0.9.0...aes-gcm-v0.10.1)

---
updated-dependencies:
- dependency-name: aes-gcm
  dependency-type: direct:production
...

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Cargo.toml

@@ -35,7 +35,7 @@ codegen-units = 1
 panic = 'abort'
 
 [dependencies]
-aes-gcm = "0.9"
+aes-gcm = "0.10"
 anyhow = "1.0"
 argon2 = "0.3"
 base64 = "0.13"