Bump thiserror from 1.0.48 to 1.0.50 #722

Job	Run time
test-client-matrix	37s
check	5m 16s
test-client-check	2m 39s
matrix	33s
Build test client (x86_64-unknown-linux-musl)	3m 34s
test-client-clippy	2m 36s
Build test client (i686-unknown-linux-musl)	4m 7s
Build test client (armv7-unknown-linux-musleabihf)	3m 25s
Build test client (aarch64-unknown-linux-musl)	3m 57s
Build test client (x86_64-unknown-freebsd)	4m 15s
Build test client (.exe, x86_64-pc-windows-gnu)	3m 50s
Check MSRV	6m 17s
tests	12m 7s
build (x86_64-unknown-linux-musl)	9m 40s
clippy	6m 39s
build (i686-unknown-linux-musl)	9m 3s
build (armv7-unknown-linux-musleabihf)	9m 16s
build (aarch64-unknown-linux-musl)	9m 26s
build (x86_64-unknown-freebsd)	10m 35s
Package nightly release	13m 52s
	2h 1m 44s

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