v5.43.0

DelayDiffEq v5.43.0

Diff since v5.42.0

Merged pull requests:

• enable dependabot for GitHub actions (#261) (@ranocha)
• Bump actions/checkout from 1 to 3 (#262) (@dependabot[bot])
• Bump codecov/codecov-action from 2 to 3 (#263) (@dependabot[bot])
• Bump actions/cache from 1 to 3 (#264) (@dependabot[bot])
• Bump actions/checkout from 3 to 4 (#269) (@dependabot[bot])

Closed issues:

• JuliaCon Proceedings Review: Example fails (#265)
• DDE does not provide any solution (example from docs) (#266)
• constant_lags contains 0.0 (#267)