[wip] use Python 3.11 & update all dependencies

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/python:3.10-alpine
+FROM docker.io/library/python:3.11-alpine
 
 RUN apk update --no-cache \
     && apk upgrade --no-cache \
@@ -11,13 +11,8 @@ WORKDIR /var/app
 
 COPY requirements.txt ./
 
-# Required to build greenlet on Alpine, dependency of SQLAlchemy 1.4.
-RUN apk add --no-cache \
-        --virtual .build-deps \
-        g++ gcc musl-dev \
-    && pip install --no-cache-dir --upgrade \
-        --requirement requirements.txt \
-    && apk del .build-deps
+RUN pip install --no-cache-dir --upgrade \
+        --requirement requirements.txt
 
 USER 10000:10001