Update to JSONRPC.jl v2 #29

Job	Run time
julia-ci / lint	20s
julia-ci / compute-test-matrix	43s
julia-ci / compat-helper	0s
julia-ci / deploy-docs	3m 33s
julia-ci / tagbot	0s
julia-ci / run-tests (1.10.7~x64, windows-latest)	4m 10s
julia-ci / run-tests (1.10.7~x86, windows-latest)	5m 40s
julia-ci / run-tests (1.10.7~x64, ubuntu-latest)	3m 23s
julia-ci / run-tests (1.10.7~x86, ubuntu-latest)	3m 52s
julia-ci / run-tests (1.10.7~x64, macos-13)	5m 35s
julia-ci / run-tests (1.10.7~aarch64, macos-latest)	2m 4s
julia-ci / run-tests (1.11.2~x64, windows-latest)	5m 44s
julia-ci / run-tests (1.11.2~x86, windows-latest)	5m 38s
julia-ci / run-tests (1.11.2~x64, ubuntu-latest)	5m 55s
julia-ci / run-tests (1.11.2~x86, ubuntu-latest)	5m 51s
julia-ci / run-tests (1.11.2~x64, macos-13)	5m 54s
julia-ci / run-tests (1.11.2~aarch64, macos-latest)	4m 49s
julia-ci / report-results	48s
	1h 3m 59s

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