JuMP v1.1.1

Diff since v1.1.0

Closed issues:

• MutableArithmetics 1.0.3 broke tests (#2999)
• read! is not implemented for LP files. (#3003)

Merged pull requests:

• JuliaFormatter: separate_kwargs_with_semicolon (#2992) (@odow)
• [docs] minor changes to the style guide (#2994) (@odow)
• [docs] update to MOI v1.3.0 (#2996) (@odow)
• Use MathJax to render formula in doc (#3004) (@metab0t)
• Prep for v1.1.1 (#3005) (@odow)