Bump CDM packages for metadata publish fix

[charlesHetterich]

Summary

• bump @parity/cdm-builder to 3.1.7 and @parity/cdm-codegen to 0.6.20
• refresh the lockfile and min-release-age excludes for those CDM versions
• add a patch changeset for the Playground CLI release
• update the CDM dependency note in CLAUDE.md with the metadata publish fix

Test plan

• pnpm format:check
• pnpm lint:license
• pnpm typecheck
• pnpm test

Notes

• pnpm peers check still reports the existing React 18 vs transitive React Native 19 peer mismatch; it is not part of the required CI checks.

[github-actions]

Dev build ready — try this branch:

curl -fsSL https://raw.githubusercontent.com/paritytech/playground-cli/main/install.sh | VERSION=dev/bump/cdm-3-1-7 bash

[github-actions]

E2E Test Pass · ❌ FAIL

Tag: e2e-ci-pr · Branch: bump/cdm-3-1-7 · Commit: 8269696 · Run logs

Cell	Result	Time
pr-preflight	❌ FAIL	3m11s
pr-deploy-frontend	❌ FAIL	2m43s
pr-mod	❌ FAIL	2m30s
pr-login-session	❌ FAIL	5m25s
pr-install	✅ PASS	0m47s
pr-deploy-foundry	✅ PASS	0m44s
pr-deploy-cdm	✅ PASS	4m45s
${{ matrix.cell }}	⏭️ SKIP	0m-1s
${{ matrix.cell }}	⏭️ SKIP	0m-1s

❌ Failed tests (3)

• e2e/cli/deploy.test.ts › dot deploy --playground — full pipeline (requires Paseo + IPFS) > frontend-only deploy completes end-to-end
  expected '\n ╭────────────────────────────────…' to contain 'Deploy complete'
• e2e/cli/deploy.test.ts › dot deploy --playground — full pipeline (requires Paseo + IPFS) > re-deploy same domain succeeds for same owner
  expected '\n ╭────────────────────────────────…' to contain 'Deploy complete'
• e2e/cli/deploy.test.ts › dot deploy --playground — full pipeline (requires Paseo + IPFS) > domain taken by another account shows unavailable
  bob deploy unexpectedly succeeded: ╭────────────────────────────────────────────────────────────────────────────╮ │ Join the competition first │ │ Playground commands are for builders who've joined the competition, so you │ │ need to be signed in first. │ │ │ │ Run playground login and scan the QR code with your Polkadot mobile app, │ │ then become a builder and join the competition at playground.dot in your │ │ desktop app. │ ╰────────────────────────────────────────────────────────────────────────────╯ : expected +0 not to be +0 // Object.is equality

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