Pin hugo version to 0.139.4 for publish workflow

Author: ThisIsMissEm

.github/workflows/publish.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v3
         with:
-          hugo-version: "latest"
+          hugo-version: "0.139.4"
           extended: true
       - name: Build
         run: make -C community.hachyderm.io hugo