Update MSRV pins #558

Job	Run time
Compile on MSRV	54s
Validate MSRV and minimal dependency versions (Cargo.lock.min, minimal dependency versions)	14s
Check formatting	18s
Run unit tests (windows-latest)	4m 9s
Run integration tests (4.4)	6m 5s
Validate MSRV and minimal dependency versions (Cargo.lock.msrv, MSRV)	13s
Run unit tests (ubuntu-latest)	1m 50s
Run integration tests (5)	5m 53s
Run unit tests (macOS-latest)	2m 57s
Check clippy	1m 2s
Release	0s
	23m 35s

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