Tool retry interrupts; shell middleware process-group kill fixed

Changes since langchain==1.3.11

release(langchain): 1.3.12 (#38730) fix(langchain): propagate interrupts through ToolRetryMiddleware (#38722) fix(langchain): avoid shared process-group kill in shell middleware (#36359) fix(langchain): sanitize anthropic cache markers on fallback retries (#37867) style: fix some ruff preview rules in langchain_v1 and standard-tests (#38657) chore(langchain): add types in agent middleware tests (#38188)