ci: run JavaScript and Markdown linting on ARM

Move lint-js-and-md to ubuntu-26.04-arm to address recurring
timeouts on ubuntu-slim.

Assisted-by: Codex
Signed-off-by: inoway46 <inoueyuya416@gmail.com>

Author: inoway46

.github/workflows/linters.yml

@@ -87,7 +87,7 @@ jobs:
           fi
   lint-js-and-md:
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-slim
+    runs-on: ubuntu-26.04-arm
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
         with: