2025.10.4

What's Changed

• Fix Docker builds by @connorjward in #4955
• Install build requirements in workflow now they aren't available by default by @connorjward in #4960
• Update notebooks repo at every push to release by @connorjward in #4958
• Fix Dockerfile ENV setting (export does not work) by @connorjward in #4966
• Update reference in demo by @ABaierReinio in #4967
• Add link to slides and code for Firedrake training event next week by @pefarrell in #4968
• Add zenodo to linkcheck ignore list by @connorjward in #4974
• Conference photo, light edits by @pefarrell in #4977
• Fix docstring for PeriodicBoxMesh by @connorjward in #4978
• Add extra detail about times and dates for Firedrake/PETSc 26 by @connorjward in #4990
• Add missing PetscFunctionBegin calls to tinyASM by @connorjward in #4997
• Add missing exercise 1 back into first notebook by @connorjward in #5013

Full Changelog: 2025.10.3...2025.10.4