soroban-rpc: Pull in Recent Soroban RPC changes from soroban-tools #32

Job	Run time
Integration tests (ubuntu-20.04, 1.21, .CLI.)	18m 49s
Unit tests (ubuntu-20.04, 1.21)	5m 56s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	2m 25s
Integration tests (ubuntu-20.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	18m 10s
Unit tests (ubuntu-22.04, 1.21)	5m 51s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	2m 36s
Integration tests (ubuntu-22.04, 1.21, .CLI.)	19m 21s
Build (macos-latest, x86_64-apple-darwin, amd64)	3m 44s
Integration tests (ubuntu-22.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	18m 21s
Build (macos-latest, aarch64-apple-darwin, arm64)	3m 41s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	7m 51s
	1h 46m 45s

Provide feedback