for PETSc v3.19.3 and v3.19.4

C codes (Chapters 1--12) were tested with PETSc v3.19.4 (commit ffb77dad1d8).

Python codes (Chapters 13--14) were tested with Firedrake commit 3fb16ad47.

Gmsh version 4.9.0

Test machine: thelio Ubuntu 22.04.3 LTS