chore(release): prepare for v0.4.0 (#151)
## [0.4.0] - 2026-06-16 ### 🚀 Features - *(metrics)* Add SubscriptionMetrics OTel observer for subscriptions (#150) ### 🐛 Bug Fixes - *(deps)* Update opentelemetry-go monorepo (#146) - *(deps)* Update module github.com/99designs/gqlgen to v0.17.91 (#148) <!-- generated by git-cliff --> --- **Note:** Please use **Squash Merge** when merging this PR. Reviewed-on: #151 Co-authored-by: Unbound Releaser <releaser@unbound.se> Co-committed-by: Unbound Releaser <releaser@unbound.se>
This commit was merged in pull request #151.
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