RELEASING.md version table is stale

[zeevdr]

Description

The current-version reference table in RELEASING.md is stale. It lists decree (Go) v0.6.0-alpha.1, decree-python v0.2.0a1, and decree-typescript v0.2.0-alpha.1, but the actual latest tags are well ahead — decree is at v0.11.0-alpha.1, decree-python at 0.3.0a1, and decree-typescript at 0.3.0-alpha.1. Convention treats RELEASING.md as the canonical current-version source, so the table should track each release. The release process already bumps a "latest" reference elsewhere in the file but missed these table rows, so they have drifted.

Surfaced during the opendecree/decree#906 docs-consistency sweep.

Acceptance criteria

• Version-table rows updated to the current latest tags for decree, decree-python, decree-typescript (and decree-ui if listed).
• Release checklist notes the table rows as part of the per-release version bump so they do not drift again.