ruff

13634ff4 - Use PEP 639 license information for Ruff itself instead of classifier (#19499)

Use PEP 639 license information for Ruff itself instead of classifier (#19499) ## Summary Declare licenses using only these two fields, as per PEP 639: * `license`: SPDX license expression consisting of one or more license identifiers * `license-files`: list of license file glob patterns Supported by maturin ≥ 1.9.0: https://www.maturin.rs/changelog.html ## Test Plan N/A