Bump version to 23.5.2

[github-actions]

What

Bump version to 23.5.2, creating release branch.

Why

Triggered by @leighmcculloch in https://github.com/stellar/rs-soroban-sdk/actions/runs/21989979419.

What is next

See the release instructions for a full rundown on the release process:
https://github.com/stellar/actions/blob/main/README-rust-release.md

Commit any changes to the release/v23.5.2 branch that are needed in this release.

If this is a regular release releasing from main, merge this PR when ready, and after merging, create a release for this version by going to this link: https://github.com/stellar/rs-soroban-sdk/releases/new?tag=v23.5.2&title=23.5.2

If this is a backport or patch release of a past version, see the release instructions. When ready to release this branch create a release by going to this link:
https://github.com/stellar/rs-soroban-sdk/releases/new?tag=v23.5.2&title=23.5.2&target=release/v23.5.2

[Copilot]

Pull request overview

This PR bumps the Rust workspace to v23.5.2 for the release branch, and also includes a small but important #[contractimpl] macro codegen fix to ensure trait-associated functions are invoked via UFCS when the impl is for a trait, with accompanying regression test updates.

Changes:

• Bump workspace and crate versions from 23.5.1 to 23.5.2 (including Cargo.lock).
• Update soroban-sdk-macros codegen so generated wrappers call <Type as Trait>::func for trait impls.
• Add a regression test + snapshot, and refresh tests-expanded/* expected outputs to match the new expansion.

Reviewed changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Cargo.toml	Bumps workspace package/dependency versions to 23.5.2.
Cargo.lock	Updates lockfile versions to 23.5.2 across workspace crates/tests.
soroban-sdk-macros/src/derive_fn.rs	Adjusts generated call site to use UFCS for trait impls; removes now-unnecessary use super::Trait in wrappers.
soroban-sdk/src/tests/contractimpl_trait_call_resolution.rs	Adds regression test ensuring trait fn is called instead of an inherent fn with the same name.
soroban-sdk/src/tests.rs	Registers the new regression test module.
soroban-sdk/test_snapshots/tests/contractimpl_trait_call_resolution/calls_trait_fn.1.json	Adds snapshot output for the new regression test.
tests-expanded/test_multiimpl_wasm32v1-none.rs	Updates expanded output to use <Contract as Trait>::... in wrappers.
tests-expanded/test_multiimpl_tests.rs	Same expanded-wrapper UFCS update for native tests.
tests-expanded/test_contracttrait_trait_tests.rs	Updates generated wrapper calls to use <Contract as AllTypes>::....
tests-expanded/test_contracttrait_impl_partial_wasm32v1-none.rs	Refreshes expansion to UFCS-style trait calls.
tests-expanded/test_contracttrait_impl_partial_tests.rs	Same expansion refresh for native tests.
tests-expanded/test_contracttrait_impl_full_wasm32v1-none.rs	Refreshes expansion to UFCS-style trait calls.
tests-expanded/test_contracttrait_impl_full_tests.rs	Same expansion refresh for native tests.
tests-expanded/test_associated_types_wasm32v1-none.rs	Refreshes expansion to UFCS-style trait calls.
tests-expanded/test_associated_types_tests.rs	Same expansion refresh for native tests.
tests-expanded/test_associated_types_contracttrait_wasm32v1-none.rs	Refreshes expansion to UFCS-style trait calls.
tests-expanded/test_associated_types_contracttrait_tests.rs	Same expansion refresh for native tests.
tests-expanded/test_account_wasm32v1-none.rs	Updates wrapper call to use <Contract as CustomAccountInterface>::__check_auth.
tests-expanded/test_account_tests.rs	Same wrapper UFCS update for native tests.

[leighmcculloch]

Released in:

• https://github.com/stellar/rs-soroban-sdk/releases/tag/v23.5.2