Bump MSRV to 1.70 (#218) #998

Job	Run time
Check	29s
Clippy	18s
Rustfmt	10s
spellcheck	11s
Test Suite (ubuntu-latest, 1.70.0, 0.10.1)	13m 40s
Test Suite (ubuntu-latest, 1.70.0, 0.11.0)	13m 47s
Test Suite (ubuntu-latest, stable, 0.10.1)	12m 12s
Test Suite (ubuntu-latest, stable, 0.11.0)	12m 28s
Test Suite (ubuntu-latest, stable, master)	2m 44s
Test Suite (ubuntu-latest, nightly, 0.10.1)	12m 31s
Test Suite (ubuntu-latest, nightly, 0.11.0)	14m 12s
Test Suite (ubuntu-latest, nightly, master)	2m 38s
Test Suite (macos-13, 1.70.0, 0.10.1)	27m 17s
Test Suite (macos-13, 1.70.0, 0.11.0)	28m 13s
Test Suite (macos-13, stable, 0.10.1)	17m 56s
Test Suite (macos-13, stable, 0.11.0)	21m 53s
Test Suite (macos-13, stable, master)	3m 30s
Test Suite (macos-13, nightly, 0.10.1)	18m 49s
Test Suite (macos-13, nightly, 0.11.0)	22m 21s
Test Suite (macos-13, nightly, master)	6m 25s
Test Suite (windows-latest, 1.70.0, 0.10.1)	19m 4s
Test Suite (windows-latest, 1.70.0, 0.11.0)	18m 45s
Test Suite (windows-latest, stable, 0.10.1)	18m 25s
Test Suite (windows-latest, stable, 0.11.0)	17m 6s
Test Suite (windows-latest, stable, master)	7m 42s
Test Suite (windows-latest, nightly, 0.10.1)	16m 56s
Test Suite (windows-latest, nightly, 0.11.0)	18m 46s
Test Suite (windows-latest, nightly, master)	4m 58s
	5h 53m 26s

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