soroban-rpc: Pull in Recent Soroban RPC changes from soroban-tools #30

Job	Run time
Integration tests (ubuntu-20.04, 1.21, .CLI.)	49s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	8s
Integration tests (ubuntu-20.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	33s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	25s
Integration tests (ubuntu-22.04, 1.21, .CLI.)	34s
Build (macos-latest, x86_64-apple-darwin, amd64)	1s
Unit tests (ubuntu-20.04, 1.21)	23s
Build (macos-latest, aarch64-apple-darwin, arm64)	6s
Unit tests (ubuntu-22.04, 1.21)	29s
Integration tests (ubuntu-22.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	40s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	14s
	4m 22s

Provide feedback