ci: nodejs in the job containers, for the Node actions

The first publish run stopped at Checkout: actions/checkout, and the
upload and release steps after it, are Node actions, and the Arch
container had no `node`. Both jobs install nodejs with their tools, as
imsd-messages' workflow does.

.forgejo/workflows/ci.yaml

@@ -57,11 +57,12 @@ jobs:
       image: archlinux:latest
     steps:
       - name: Install tools
+        # nodejs: the checkout, upload and release steps are Node actions.
         run: |
           pacman-key --init
           pacman-key --populate archlinux
           pacman -Sy --noconfirm --needed archlinux-keyring
-          pacman -Syu --noconfirm --needed flatpak flatpak-builder git jq gnupg go-yq ostree python util-linux
+          pacman -Syu --noconfirm --needed flatpak flatpak-builder git jq gnupg go-yq nodejs ostree python util-linux
           git config --global --add safe.directory '*'
 
       - name: Sdk and base app
@@ -156,11 +157,12 @@ jobs:
         -v /etc/crafter-flatpak:/run/crafter-flatpak:ro
     steps:
       - name: Install tools
+        # nodejs: the checkout, upload and release steps are Node actions.
         run: |
           pacman-key --init
           pacman-key --populate archlinux
           pacman -Sy --noconfirm --needed archlinux-keyring
-          pacman -Syu --noconfirm --needed flatpak flatpak-builder git jq gnupg go-yq ostree python util-linux
+          pacman -Syu --noconfirm --needed flatpak flatpak-builder git jq gnupg go-yq nodejs ostree python util-linux
           git config --global --add safe.directory '*'
 
       - name: Sdk and base app