Release v0.19.4

Bug Fixes

• d615b3c - (deps) bump actions/download-artifact from 3 to 4 - dependabot[bot]
• 776800a - (deps) bump dependabot/fetch-metadata from 1 to 2 - dependabot[bot]
• 8232684 - Upgrade to artifact v4 - Billie Thompson

Miscellaneous Chores

• a5fb943 - (version) v0.19.4 [skip ci] - cog-bot