build: bump to v0.2.0-alpha.2 · OpenZeppelin/rust-contracts-stylus@aa32f48

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

Cargo doc: contracts/src/access/control.rs#L125

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/access/ownable.rs#L129

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/access/ownable_two_step.rs#L149

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/finance/vesting_wallet.rs#L350

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc1155/extensions/metadata_uri.rs#L57

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc1155/extensions/supply.rs#L83

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc1155/mod.rs#L387

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc20/extensions/capped.rs#L53

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc20/extensions/metadata.rs#L63

unexpected `cfg` condition value: `export-abi`

Cargo doc: contracts/src/token/erc20/extensions/permit.rs#L84

unexpected `cfg` condition value: `export-abi`

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