chore: Clean up release migration (#600)

Author: npalm

Diff for: .github/workflows/release.yml

@@ -26,5 +26,3 @@ jobs:
           token: ${{ steps.token.outputs.token }}
           include-v-in-tag: false
           signoff: "Niek Palm <[email protected]>"
-          bootstrap-sha: 3596bacda1c6a990a2e4f5bb6f5dbe07a77f65d6
-          release-as: 5.6.0