v0.4.12

P4est v0.4.12

Diff since v0.4.11

Merged pull requests:

• Bump crate-ci/typos from 1.16.22 to 1.16.23 (#103) (@dependabot[bot])
• Fix version of P4est_jll.jl (#104) (@JoshuaLampert)
• Create Downgrade.yml (#105) (@JoshuaLampert)
• coverallsapp at v2 (#106) (@ranocha)
• Bump actions/download-artifact from 3 to 4 (#107) (@dependabot[bot])
• Bump actions/upload-artifact from 3 to 4 (#108) (@dependabot[bot])
• Bump crate-ci/typos from 1.16.23 to 1.16.26 (#109) (@dependabot[bot])
• use julia-actions/cache also for Documenter (#110) (@ranocha)