chore: Bump version

[Pringled]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
src/semble/version.py	100.00% <100.00%> (ø)

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[greptile-apps]

Confidence Score: 5/5

Safe to merge — the only change is bumping the version triple from 0.3.4 to 0.4.0.

A single-line mechanical version bump with no logic changes.

No files require special attention.

_{Reviews (1): Last reviewed commit: "Bump version" | Re-trigger Greptile}