Update actions/setup-node digest to a0853c2

Author: renovate[bot]

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

@@ -36,7 +36,7 @@ jobs:
         working-directory: ./site
 
       - name: Install Node.js
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444
         with:
           node-version: 22.16.0
 
@@ -80,7 +80,7 @@ jobs:
           path: site/build
 
       - name: Install Node.js
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444
         with:
           node-version: 22.16.0