Update Rust dependencies & fix warnings #902

Job	Run time
Run checks (ubuntu-latest)	1m 52s
Run checks (macos-latest)	1m 15s
Run checks (windows-latest)	3m 7s
Build library (iOS) (aarch64-apple-ios)	2m 18s
Run tests (ubuntu-latest)	2m 50s
Build library (iOS) (aarch64-apple-ios-sim)	2m 40s
Build library (Android) (aarch64-linux-android)	4m 7s
Run tests (macos-latest)	2m 37s
Build library (iOS) (x86_64-apple-ios)	2m 39s
Build library (Android) (armv7-linux-androideabi)	3m 57s
Run tests (windows-latest)	4m 54s
Build library (Android) (i686-linux-android)	4m 4s
Build library (linux-aarch64, ubuntu-latest, libaries_askar.so, aarch64-unknown-linux-gnu, true)	3m 23s
Build library (Android) (x86_64-linux-android)	3m 56s
Build library (linux-x86_64, ubuntu-latest, libaries_askar.so, x86_64-unknown-linux-gnu, true)	3m 14s
Build library (darwin-universal, macos-latest, libaries_askar.dylib, darwin-universal, beta)	3m 17s
Build library (windows-x86_64, windows-latest, aries_askar.dll, x86_64-pc-windows-msvc)	4m 19s
Create iOS xcframework	34s
Create library (Android)	8s
Build and test JavaScript wrapper (linux-aarch64)	48s
Build and test Python wrapper (linux-aarch64, 3.8)	19s
Build and test JavaScript wrapper (linux-x86_64)	56s
Build and test JavaScript wrapper (darwin-universal)	1m 6s
Build and test Python wrapper (linux-x86_64, 3.8)	25s
Build and test Python wrapper (darwin-universal, 3.8)	50s
Build and test Python wrapper (windows-x86_64, 3.8)	43s
Create iOS and Android release assets	0s
Successful build	1s
	1h 0m 19s

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