install ca certificates in attempt to avoid bug in docker

Dockerfile

@@ -5,7 +5,7 @@ RUN cargo install --path .
 
 FROM debian:bookworm-slim
 
-RUN apt update && apt install -y openssl
+RUN apt update && apt install -y openssl ca-certificates
 
 COPY --from=builder /usr/local/cargo/bin/debrief /usr/local/bin/debrief
 CMD ["debrief"]