chore: favicon and old file rm

Dockerfile

@@ -9,7 +9,7 @@ FROM alpine:3.21
 RUN apk add --no-cache ca-certificates
 WORKDIR /app
 COPY --from=build /chaosmith-site .
-COPY index.html ABSTRACTS.png ABSTRACTS.webp ./
+COPY index.html ABSTRACTS.webp favicon.ico favicon.svg ./
 COPY src/ ./src/
 EXPOSE 8000
 CMD ["./chaosmith-site"]