switch to hugomods hugo debian-node-lts image

As the GitLab documentation also uses a hugomods image and as we're
already using one in other repos, switch to it.

https://docs.gitlab.com/tutorials/hugo/#add-your-gitlab-configuration-options
https://docker.hugomods.com/
https://github.com/hugomods/docker
https://hub.docker.com/r/hugomods/hugo

.forgejo/workflows/cleanup.yaml

@@ -7,7 +7,7 @@ jobs:
   cleanup-staging:
     runs-on: docker
     container:
-      image: code.forgejo.org/oci/node:22-bookworm
+      image: code.forgejo.org/oci/node:20-bookworm
     steps:
       - name: Pipeline info PR
         run: |

.forgejo/workflows/deploy.yaml

@@ -10,29 +10,22 @@ env:
   TZ: Europe/Berlin
 
 jobs:
-  pipeline-info:
+  build:
     runs-on: docker
     container:
-      image: code.forgejo.org/oci/node:22-bookworm
+      image: hugomods/hugo:debian-node-lts-0.148.1
     steps:
       - name: Pipeline info
         run: |
           echo "Run triggered by ${{ github.event_name }} (${{ github.event.action }}) on ref ${{ github.ref_name }}"
 
-  build:
-    runs-on: docker
-    container:
-      image: ghcr.io/gohugoio/hugo:v0.148.1
-    steps:
       - name: Install packages
         run: |
-          apk update
-          # For CI actions.
-          apk add nodejs-current
+          apt update
           # For website build.
-          apk add tzdata coreutils curl jq git
+          apt install -y curl jq git
           # For uploading.
-          apk add rsync openssh
+          apt install -y rsync ssh
 
       - uses: actions/checkout@v4
         with: