Remove deprecated siunitx v3 detection command

Was removed in major release 3:

https://github.com/josephwright/siunitx/blob/main/CHANGELOG.md#v300

The package gave an automated deprecation warning and suggested
a fix, which was simply adopted here:

Package siunitx Info: Option "detect-all" has been deprecated in this
release.
(siunitx)
(siunitx)             Use "mode = match, propagate-math-font = true,
(siunitx)             reset-math-version = false, reset-text-family =
false,
(siunitx)             reset-text-series = false, text-family-to-math =
true,
(siunitx)             text-series-to-math = true" as a replacement.

Fixes #8

docker/tex/acp.cls

@@ -2549,7 +2549,19 @@
 
 \RequirePackage{siunitx}% Typesetting physical units correctly
  \sisetup{%
- detect-all,% Detect surrounding font context, like weight, italics etc.
+ % For siunitx v3, the following block replaces what used to be
+ % `detect-all` (removed in that release, see
+ % https://github.com/josephwright/siunitx/blob/main/CHANGELOG.md#v300 ).
+ % It allows the `siunitx` output to match surrounding text/math (italics/bold/...,
+ % roman/sans/... etc. as much as possible)
+ mode=match,
+ propagate-math-font=true,
+ reset-math-version=false,
+ reset-text-family=false,
+ reset-text-series=false,
+ reset-text-shape=false,% Not part of official fix, but still added (see https://collaborating.tuhh.de/alex/latex-git-cookbook/-/issues/8)
+ text-family-to-math=true,
+ text-series-to-math=true,
  %
  % Requires siunitx v3+, see also https://tex.stackexchange.com/a/468031/120853,
  % https://github.com/josephwright/siunitx/issues/532 :