Update npm install command to include dev dependencies

Author: MickLesk

install/changedetection-install.sh

@@ -62,7 +62,7 @@ msg_info "Installing Browserless & Playwright"
 mkdir /opt/browserless
 $STD python3 -m pip install playwright
 $STD git clone https://github.com/browserless/chrome /opt/browserless
-$STD npm install --prefix /opt/browserless
+$STD npm install --prefix /opt/browserless --include=dev 
 $STD /opt/browserless/node_modules/playwright-core/cli.js install --with-deps &>/dev/null
 $STD /opt/browserless/node_modules/playwright-core/cli.js install --force chrome &>/dev/null
 $STD /opt/browserless/node_modules/playwright-core/cli.js install chromium firefox webkit &>/dev/null