Update MSRV pins and lockfiles (#284) #628

Job	Run time
Check clippy	59s
Check formatting	17s
Run unit tests (ubuntu-latest)	1m 44s
Run integration tests (4.4)	5m 4s
Run integration tests (2025)	4m 59s
Validate minimal dependency versions	57s
Run unit tests (windows-latest)	3m 30s
Run unit tests (macOS-latest)	1m 59s
Run integration tests (5)	4m 54s
Release	0s
	24m 23s

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