Update lexical-core requirement from 0.8.5 to 1.0.1 #590

Job	Run time
Check	13s
Coverage	41s
Lints	20s
Test Suite (ubuntu-latest, MSRV)	2m 50s
Test Suite (ubuntu-latest, stable)	2m 42s
no-std build (aarch64-unknown-none)	23s
no-std build (thumbv6m-none-eabi)	21s
Test Suite (macos-latest, MSRV)	2m 20s
Test Suite (macos-latest, stable)	2m 0s
Test Suite (windows-latest, MSRV)	9m 10s
Test Suite (windows-latest, stable)	8m 18s
Release	0s
	29m 18s

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