Age SIPP and SCF donors to target year

[MaxGhenis]

Summary

• add target-year uprating for SIPP and SCF donor survey value columns using PolicyEngine US-data uprating factors
• wire the PE-US-data rebuild provider bundle so SIPP 2023 and SCF 2022 are valued at the PUF/final target year
• keep donor survey weights and categorical/status columns unchanged, and keep source names tied to source vintage for provenance
• refresh SIPP copied income after annualization so it stays aligned with employment_income

Tests

• uv run --python 3.13 --extra dev --extra policyengine pytest tests/test_donor_survey_source_providers.py tests/pipelines/test_pe_us_data_rebuild.py -q
• uv run --python 3.13 --extra dev --extra policyengine pytest tests/test_pe_source_impute_specs.py -q
• uv run --python 3.13 --extra dev --extra policyengine ruff check src/microplex_us/data_sources/donor_surveys.py src/microplex_us/pipelines/pe_us_data_rebuild.py tests/test_donor_survey_source_providers.py tests/pipelines/test_pe_us_data_rebuild.py
• uv run --python 3.13 --extra dev --extra policyengine ruff format --check src/microplex_us/data_sources/donor_surveys.py src/microplex_us/pipelines/pe_us_data_rebuild.py tests/test_donor_survey_source_providers.py tests/pipelines/test_pe_us_data_rebuild.py