Julia 1.11 support

[fonsp]

There were many issues with Julia 1.11 support, most are fixed:

• https://github.com/fonsp/Pluto.jl/pull/2661
• https://github.com/fonsp/Pluto.jl/issues/2806
• https://github.com/fonsp/Pluto.jl/pull/2807
• https://github.com/fonsp/Pluto.jl/issues/2810
• https://github.com/fonsp/Pluto.jl/pull/2815
• https://github.com/fonsp/Pluto.jl/pull/2828
• https://github.com/fonsp/Pluto.jl/pull/2842
• https://github.com/fonsp/Pluto.jl/issues/2854
• https://github.com/fonsp/Pluto.jl/pull/2860
• https://github.com/fonsp/Pluto.jl/issues/2782
• https://github.com/fonsp/Pluto.jl/pull/2786

Everything above was released in Pluto 0.19.42

New:

• https://github.com/fonsp/Pluto.jl/issues/2910 (will be included in Pluto 0.19.43 release)
• https://github.com/fonsp/Pluto.jl/pull/2915 (will be included in Pluto 0.19.43 release)
• https://github.com/fonsp/Pluto.jl/issues/2907