new: [postgres] update ``pgm`` version included in image from ``0.0.3`` to ``0.0.4``

Version ``0.0.4`` properly ``pgm chown`` database functions.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

postgres/build/Dockerfile

@@ -24,7 +24,7 @@ USER root
 
 RUN apk add curl
 
-RUN curl -L https://raw.githubusercontent.com/0k/pgm/0.0.3/bin/pgm > /bin/pgm && \
+RUN curl -L https://raw.githubusercontent.com/0k/pgm/0.0.4/bin/pgm > /bin/pgm && \
     chmod +x /bin/pgm
 
 FROM common