fix: add libnss3 and upgrade curl_cffi to fix TLS/SSL errors

curl_cffi uses BoringSSL internally and needs libnss3 on Debian.
Also upgrade curl_cffi to latest version for compatibility.

Dockerfile

@@ -3,13 +3,14 @@ FROM python:3.12-slim AS base
 WORKDIR /app
 
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends gcc g++ ca-certificates libssl-dev curl && \
+    apt-get install -y --no-install-recommends gcc g++ ca-certificates libssl-dev curl libnss3 && \
     rm -rf /var/lib/apt/lists/*
 
 COPY pyproject.toml ./
 
 RUN pip install --no-cache-dir . && \
     pip install --no-cache-dir openbb-quantitative openbb-econometrics openbb-technical && \
+    pip install --no-cache-dir --upgrade curl_cffi && \
     apt-get purge -y gcc g++ && \
     apt-get autoremove -y