wip: test on self hosted for now

Signed-off-by: skjnldsv <skjnldsv@protonmail.com>

Author: skjnldsv

.github/workflows/sphinxbuild.yml

@@ -116,7 +116,7 @@ jobs:
   # ============================================================================
   build-pdf:
     name: Build PDF ${{ matrix.manual.name }}
-    runs-on: ubuntu-latest
+    runs-on: [ubuntu-latest, self-hosted]
     needs: setup-latex-cache
 
     strategy: