20.1.0

What's Changed

• Remove unused export by @leighmcculloch in #1199
• Update soroban-env-* to 20.1.0 by @leighmcculloch in #1203
• Bump version to 20.1.0 by @github-actions in #1204

Full Changelog: v20.0.3...v20.1.0

See the soroban-env-* release notes for more details also:

• https://github.com/stellar/rs-soroban-env/releases/tag/v20.1.0