chore(Containerfile): migrate labels to OCI image spec

Author: librefos

Containerfile

@@ -1,7 +1,7 @@
 FROM debian:bookworm-slim
 
-LABEL description="Lightweight TexLive environment for PDF compilation"
-LABEL maintainer="librefos"
+LABEL org.opencontainers.image.authors="librefos"
+LABEL org.opencontainers.image.description="Lightweight TexLive environment for PDF compilation"
 LABEL org.opencontainers.image.source="https://github.com/librefos/cv"
 
 RUN apt-get update && apt-get install -y --no-install-recommends \