bump version numbers

update deps

release: ark-groth16 v0.4.0 (#47)

* (semi-) Automate the release process (#46)

* chore: Release {{crate_name}} version {{version}}

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Co-authored-by: mmagician <[email protected]>
Co-authored-by: github-actions <[email protected]>

Release v0.3.0 (#32)

* release v0.3.0

* fmt

(cargo-release) ark-groth16 version 0.2.0