chore!: remove `anyhow` from default features #474

Job	Run time
Clippy (stable)	30s
Rustfmt (stable)	9s
Miri	1m 21s
Check (stable)	17s
Test Suite	3m 5s
Test Suite (stable)	1m 3s
Test Suite (--no-default-features)	4m 6s
Test Suite (ubuntu-latest)	1m 6s
Test Suite (--no-default-features --features track-caller)	2m 54s
Test Suite (stable, --no-default-features)	1m 4s
Test Suite (windows-latest)	2m 48s
Test Suite (--no-default-features --features auto-install)	2m 50s
Test Suite (stable, --no-default-features --features track-caller)	1m 4s
Test Suite (macOS-latest)	52s
Test Suite (stable, --no-default-features --features auto-install)	52s
Test Suite (stable, --features pyo3)	1m 1s
Test Suite (stable, --all-features)	1m 9s
Test Suite (beta)	1m 5s
Test Suite (beta, --no-default-features)	59s
Test Suite (beta, --no-default-features --features track-caller)	59s
Test Suite (beta, --no-default-features --features auto-install)	57s
Test Suite (beta, --features pyo3)	1m 11s
Test Suite (beta, --all-features)	1m 10s
Test Suite (nightly)	1m 7s
Test Suite (nightly, --no-default-features)	1m 4s
Test Suite (nightly, --no-default-features --features track-caller)	1m 5s
Test Suite (nightly, --no-default-features --features auto-install)	1m 4s
Test Suite (nightly, --features pyo3)	1m 6s
Test Suite (nightly, --all-features)	1m 16s
	39m 14s

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