build yamlのruns-onの修正

Author: kiyoshi-honda

.github/workflows/jekyll-gh-pages.yml

@@ -24,7 +24,7 @@ concurrency:
 jobs:
   # Build job
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4