Revert "chore(deps): update node.js to v22 (#137)"

This reverts commit 4ab5466.

server/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:22.11.0-bookworm@sha256:de4c8be8232b7081d8846360d73ce6dbff33c6636f2259cd14d82c0de1ac3ff2 AS dev
+FROM node:20.18.0-bookworm@sha256:a5e0ed56f2c20b9689e0f7dd498cac7e08d2a3a283e92d9304e7b9b83e3c6ff3 AS dev
 
 WORKDIR /usr/src/app
 
@@ -56,7 +56,7 @@ ADD --chmod=444 https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v
 RUN umask 0333 && unzip /build/geodata/cities500.zip -d /build/geodata/ && \
     rm /build/geodata/cities500.zip && date --iso-8601=seconds | tr -d "\n" > /build/geodata/geodata-date.txt
 
-FROM node:22.11.0-bookworm-slim@sha256:f73e9c70d4279d5e7b7cc1fe307c5de18b61089ffa2235230408dfb14e2f09a0 AS prod
+FROM node:20.18.0-bookworm-slim@sha256:5bba9bfa8c663a8bb5f014d39ea97550946b355b49308c2d1305d706489e8e14 AS prod
 
 WORKDIR /build