fix: dockerfile 수정 (#29)

* buster에서 bookworm으로 변경했습니다.

Author: mjy926

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-buster as builder
+FROM python:3.11-bookworm as builder
 
 RUN pip install poetry==1.5.0
 
@@ -13,7 +13,7 @@ COPY pyproject.toml poetry.lock ./
 
 RUN --mount=type=cache,target=$POETRY_CACHE_DIR poetry install --without dev --no-root
 
-FROM python:3.11-slim-buster as runtime
+FROM python:3.11-slim-bookworm as runtime
 
 ARG ENV