ci: Updated release please config (#1773)

This PR contains further release-please configuration changes.

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
the PR is ready to merge.
- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
- [ ] I have
[linked](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
this pull request to relevant issues (if any exist).

.github/workflows/release_please.yml

@@ -16,7 +16,9 @@ jobs:
       - uses: google-github-actions/release-please-action@v3
         with:
           release-type: simple
-          package-name: release-please-action
+          package-name: aztec-packages
           prerelease: true
           default-branch: master
+          versioning-strategy: prerelease
+          pull-request-header: ":robot: I have created a new Aztec Packages release"
           changelog-types: '[{"type":"feat","section":"Features","hidden":false},{"type":"fix","section":"Bug Fixes","hidden":false},{"type":"chore","section":"Miscellaneous","hidden":false},{"type":"test","section":"Miscellaneous","hidden":false},{"type":"refactor","section":"Miscellaneous","hidden":false},{"type":"perf","section":"Miscellaneous","hidden":false},{"type":"docs","section":"Documentation","hidden":false},{"type":"ci","section":"Build","hidden":false},{"type":"build","section":"Build","hidden":false}]'