v0.4.49

Trixi v0.4.49

Diff since v0.4.48

Merged pull requests:

• Relax DGMulti <:Polynomial type restriction (#1235) (@jlchan)
• CompatHelper: bump compat for CairoMakie to 0.9 for package test, (keep existing compat) (#1237) (@github-actions[bot])
• CompatHelper: bump compat for CairoMakie to 0.9 for package docs, (keep existing compat) (#1238) (@github-actions[bot])