Bump gix from 0.67.0 to 0.68.0 (#480) #1442

Job	Run time
Check Languages File	4s
Build --no-default-features (1.80 macOS-latest)	1m 33s
Build --no-default-features (stable macOS-latest)	1m 32s
Build --no-default-features --features color (1.80 macOS-latest)	1m 42s
Build --no-default-features --features color (stable macOS-latest)	1m 26s
Build --no-default-features (1.80 ubuntu-latest)	1m 28s
Build --no-default-features (stable ubuntu-latest)	1m 16s
Build --no-default-features --features color (1.80 ubuntu-latest)	1m 33s
Build --no-default-features --features color (stable ubuntu-latest)	1m 25s
Build --no-default-features (1.80 windows-latest)	2m 48s
Build --no-default-features (stable windows-latest)	4m 32s
Build --no-default-features --features color (1.80 windows-latest)	2m 38s
Build --no-default-features --features color (stable windows-latest)	4m 25s
Lint	41s
Benchmarks	2m 45s
Coverage --no-default-features (ubuntu-latest)	2m 27s
Coverage --no-default-features --features color (ubuntu-latest)	2m 25s
	34m 40s

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