chore: set version to v0.8.0

Author: github-actions[bot]

CHANGELOG.md

@@ -0,0 +1,15 @@
+### What's changed in v0.8.0
+
+* feat(psqlcluster): add targetNamespace field (by @patrickleet)
+
+  Decouples the PSQLCluster XR's control-plane namespace from the composed
+  CNPG Cluster's data-plane namespace. Defaults to the XR's own ns (the
+  common case); override when the XR lives in the platform default ns but
+  the data plane needs to land elsewhere — e.g. embedded in AuthStack so
+  Zitadel pods can env-var-mount the app Secret without cross-namespace
+  mirroring.
+
+  Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
+
+
+See full diff: [v0.7.0...v0.8.0](https://github.com/hops-ops/psql-stack/compare/v0.7.0...v0.8.0)