Install extra TeX fonts on one runner only

The DejaVu and Heuristica fonts are used by the type-1 font
subsetting tests.

Heuristica has a Cyrillic encoding and apparently cannot be
loaded without installing texlive-lang-cyrillic.

Author: jkseppan

.github/workflows/tests.yml

@@ -64,8 +64,10 @@ jobs:
             python-version: '3.12'
             # https://github.com/matplotlib/matplotlib/issues/29844
             pygobject-ver: '<3.52.0'
-          - os: ubuntu-22.04
+          - name-suffix: "(Extra TeX packages)"
+            os: ubuntu-22.04
             python-version: '3.13'
+            extra-packages: 'texlive-fonts-extra texlive-lang-cyrillic'
             # https://github.com/matplotlib/matplotlib/issues/29844
             pygobject-ver: '<3.52.0'
           - name-suffix: "Free-threaded"
@@ -142,7 +144,8 @@ jobs:
               texlive-latex-recommended \
               texlive-luatex \
               texlive-pictures \
-              texlive-xetex
+              texlive-xetex \
+              ${{ matrix.extra-packages }}
             if [[ "${{ matrix.name-suffix }}" != '(Minimum Versions)' ]]; then
               sudo apt-get install -yy --no-install-recommends ffmpeg poppler-utils
             fi