blue-marble/gridpath: GridPath v2026.2.0

What's Changed Feature: Support limiting number of startups by horizon by @anamileva in https://github.com/blue-marble/gridpath/pull/1330 Bugfix: Fix "get_inputs_from_database" for intertia reserves requirements by @Janie115 in https://github.com/blue-marble/gridpath/pull/1334 Enhancement: Allow instantaneous penetration ratios to be negative by @Janie115 in https://github.com/blue-marble/gridpath/pull/1335 Feature: Built-in period/month horizons by @anamileva in https://github.com/blue-marble/gridpath/pull/1337 Bugfix: Fixes to load component shift by @Janie115 in https://github.com/blue-marble/gridpath/pull/1336 Major Feature: Support for stochastic formulations by @anamileva in https://github.com/blue-marble/gridpath/pull/1338 Full Changelog: https://github.com/blue-marble/gridpath/compare/v2026.1.0...v2026.2.0