specify MSRV for toolchain in ci #7

Job	Run time
Build sdist	16s
Clippy	21s
Build on linux (x86_64 - all - manylinux)	3m 8s
Build on linux (aarch64 - all - manylinux)	3m 28s
Build on macos (x86_64 - all)	6m 15s
Build on macos (aarch64 - all)	3m 55s
Build on windows (x86_64 - all)	4m 43s
Build on windows (aarch64 - 3.11 3.12)	5m 24s
Build on linux (armv7 - 3.8 3.9 3.10 3.11 3.12 - manylinux)	3m 7s
Build on linux (x86_64 - all - musllinux_1_1)	2m 17s
Build on linux (aarch64 - all - musllinux_1_1)	2m 12s
Test build on aarch64-ubuntu22.04	1m 2s
Test build on armv7-ubuntu22.04	1m 33s
Test build on ubuntu	18s
Test build on aarch64-alpine_latest	56s
Test build on macos	17s
Test build on windows	32s
Release	0s
	39m 44s

Provide feedback