chore(deps): update node.js to v20 (#1109)

* chore(deps): update node.js to v24

* Update .nvmrc

* also update dockerfile

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: lodewiges <[email protected]>
Co-authored-by: Lodewiges <[email protected]>

Author: renovate[bot]

.nvmrc

@@ -1 +1 @@
-18.20.8
+20.19.5

Dockerfile

@@ -19,7 +19,7 @@ RUN apt-get update -qq && \
   libyaml-dev
 
 # Add Node, required for asset pipeline.
-RUN curl -sL https://deb.nodesource.com/setup_18.x | bash - && \
+RUN curl -sL https://deb.nodesource.com/setup_20.x | bash - && \
   apt-get install -y nodejs && \
   npm install -q -g yarn