fix: keep libssl3 runtime dependency to prevent TLS errors in container

autoremove was removing SSL runtime libraries after purging gcc/g++,
causing curl_cffi TLS handshake failures when connecting to Yahoo Finance.
Explicitly install libssl3 as runtime dep and only purge libssl-dev.

Dockerfile

@@ -3,7 +3,9 @@ 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 libnss3 && \
+    apt-get install -y --no-install-recommends \
+        gcc g++ libssl-dev \
+        ca-certificates curl libnss3 libssl3 && \
     rm -rf /var/lib/apt/lists/*
 
 COPY pyproject.toml ./
@@ -11,7 +13,7 @@ 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 purge -y gcc g++ libssl-dev && \
     apt-get autoremove -y
 
 COPY *.py ./