chore: Bump version to 4.1.0

[shinaoka]

Summary

Bump version to 4.1.0 for features and fixes merged since 4.0.1.

Added

• N-gram tokenizer mode for CJK language support (Add N-gram Tokenizer Mode for CJK Language Support #150)
• Handle m.replace edit events to remove original messages from search index (Search for any old event #148)

Fixed

• Delete from uncommitted_events before events table to respect foreign key constraints (Search for any old event #148)
• Make delete_event_by_id atomic with SAVEPOINT (Search for any old event #148)

Changed

• Convert to Cargo workspace and cleanup dependencies (Add N-gram Tokenizer Mode for CJK Language Support #150)

Changes

• Cargo.toml: workspace version 4.0.1 → 4.1.0
• seshat-node/Cargo.toml: 4.0.0 → 4.1.0
• seshat-node/package.json: 4.0.1 → 4.1.0
• CHANGELOG.md: Add 4.1.0 entry

[shinaoka]

@poljar What do you think?

[poljar]

@poljar What do you think?

Hi. Yes we'll do a release, though I need to add some more changes for better debug-ability before we do that.

Hopefully I'll get to that this week.

[shinaoka]

@poljar
Thank you for your work. Do we need more updates before a release?

[poljar]

There are a couple of problems with the workspace setup breaking the node release, further more the links in the changelog appear to be wrong.

I opened #164 as replacement for this PR.