Update alerta, webui and node

defaults/main.yml

 # From https://hub.docker.com/r/alerta/alerta-web
-alerta_version_api: 8.7.0
+alerta_version_api: 9.0.3
 
 # From https://github.com/alerta/alerta-webui
-alerta_version_web_ui: 8.7.0
+alerta_version_web_ui: 8.7.1

templates/api/Dockerfile

@@ -6,8 +6,8 @@ RUN /venv/bin/pip install python-gitlab && \
     cd /tmp/plugins && \
     /venv/bin/python3 setup_alerta_gitlab.py install && \
     /venv/bin/python3 setup_alerta_elastalert.py install && \
-    cp alerta_gitlab.py /venv/lib/python3.8/site-packages/ && \
-    cp alerta_elastalert.py /venv/lib/python3.8/site-packages/ && \
+    cp alerta_gitlab.py /venv/lib/python3.9/site-packages/ && \
+    cp alerta_elastalert.py /venv/lib/python3.9/site-packages/ && \
     echo "Done"
 
 USER 1001

templates/webui/Dockerfile

 # build stage
-FROM node:14-alpine as build-stage
+FROM node:16-alpine as build-stage
 
 RUN apk add --no-cache git
 WORKDIR /app