ci: try fix pdf generating

jinzhongjia · jinzhongjia · commit 000d96ab6bff · 2025-02-21T23:30:41.000+08:00
diff --git a/.github/workflows/pdf.yml b/.github/workflows/pdf.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout repository
