v6.85.0

StochasticDiffEq v6.85.0

Diff since v6.84.0

Merged pull requests:

• test: fix Ito reversal tests (#635) (@AayushSabharwal)
• Bump actions/checkout from 4 to 6 (#639) (@dependabot[bot])
• Add Julia ecosystem to Dependabot configuration (#640) (@ChrisRackauckas-Claude)
• Update StochasticDiffEq requirement to 6.84.0 in /docs in the all-julia-packages group across 1 directory (#641) (@dependabot[bot])
• Remove NLsolve dependency in favor of SimpleNonlinearSolve (#644) (@ChrisRackauckas-Claude)