Drop compromised eMudhra roots from the image CA store.

Install the patched ca-certificates package so outbound TLS rejects emSign ECC Root CA - G3.

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -9,7 +9,8 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
 WORKDIR /app
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends libpq5 \
+    && apt-get install -y --no-install-recommends ca-certificates libpq5 \
+    && update-ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv