Update e2b dependency to latest

[mishushakov]

Summary

• Bump e2b to latest npm version (^2.19.4) in packages/js-sdk
• Bump e2b to latest pypi version (^2.20.3) in packages/python-sdk and template
• Regenerate pnpm-lock.yaml and both poetry.lock files

Test plan

• CI passes

🤖 Generated with Claude Code

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PR Summary

Medium Risk
Dependency bumps (notably Python e2b from ^2.6.0 to ^2.20.3) may introduce behavior changes in core SDK interactions despite no code changes. Lockfile regeneration can also affect transitive dependency resolution across environments.

Overview
Updates the e2b dependency to newer releases across the JS SDK (packages/js-sdk to ^2.19.4) and the Python SDK/template (to ^2.20.3).

Regenerates pnpm-lock.yaml and both poetry.lock files to reflect updated direct/transitive dependencies, and adds a changeset to publish patch releases for @e2b/desktop and @e2b/desktop-python.

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