chore(hermes): align plugin version with dev

Update the Hermes plugin manifest from 6.1.1 to 6.2.0 so PR #2025 matches the current release version at the tip of origin/dev.\n\nThis intentionally does not change the version bump tooling. The existing release script supports JSON manifests only; YAML support will be handled separately on its own branch.

.hermes-plugin/plugin.yaml

@@ -1,5 +1,5 @@
 name: superpowers
-version: 6.1.1
+version: 6.2.0
 description: Superpowers skills and workflow bootstrap for Hermes Agent
 author: obra
 provides_hooks: