fix: add yarn v4 support

src/modules/monsterpi/filesystem/home/pi/scripts/update-fdm-monster.sh

@@ -172,11 +172,12 @@ echo "[7b/${ts}] Extracting new dist zip to ${dist_active_path}"
 # Step 8) Ensure yarn is new, (optional)
 echo "[8/${ts}] Updating yarn"
 npm i -g yarn
+yarn set version berry
 
 # Step 9) Ensure the required packages are present with yarn (which is already installed, we're just keeping it fresh)
 echo "[9/${ts}] Updating the necessary modules of FDM Monster"
 pushd "${dist_active_path}"
-yarn install --production --pure-lockfile --network-timeout 1000000000
+YARN_HTTP_TIMEOUT=1000000 yarn workspaces focus --all --production
 popd
 
 # Step 10) Run the service

src/modules/monsterpi/start_chroot_script

@@ -62,9 +62,8 @@ curl -sL https://deb.nodesource.com/setup_$MONSTERPI_NODEJS_VERSION | bash -
 apt update
 apt install -y nodejs
 
-# Update NPM and install yarn globally
-npm install -g npm
-npm install -g yarn
+# Enable yarn/pnpm/npm
+corepack enable
 
 pushd /home/"${BASE_USER}"
     # Install FDM Monster (this is really slow on QEMU!)