Bump soroban Rust dependencies #180

Job	Run time
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	2m 38s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	2m 51s
Integration tests (ubuntu-20.04, 1.22, .CLI.)	2m 37s
Unit tests (ubuntu-20.04, 1.22)	3m 5s
Integration tests (ubuntu-20.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	11m 45s
Unit tests (ubuntu-22.04, 1.22)	2m 8s
Build (macos-latest, x86_64-apple-darwin, amd64)	5m 52s
Integration tests (ubuntu-22.04, 1.22, .CLI.)	2m 15s
Build (macos-latest, aarch64-apple-darwin, arm64)	5m 30s
Integration tests (ubuntu-22.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	11m 4s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	10m 4s
	59m 49s

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