chore(deps): update hugo to 0.147.8 (#46)

Author: TasoOneAsia

.github/workflows/docs-build-push.yml

@@ -53,7 +53,7 @@ on:
         value: ${{ jobs.build.outputs.PREVIEW_URL }}
 env:
   GO_VERISON: "1.21" # Go version used for `hugo mod get`
-  HUGO_VERSION: "0.134.2" # Hugo version used for building docs
+  HUGO_VERSION: "0.147.8" # Hugo version used for building docs
   THEME_MODULE: "github.com/nginxinc/nginx-hugo-theme" # Name of source repo for module. For example; github.com/nginxinc/nginx-hugo-theme
 
   PR_NUMBER: ${{github.event.pull_request.number}}