Update libpq version

Fixes a blocking error when starting Docker instance.

Author: jaw12346

ACMAS/app/Dockerfile

@@ -56,7 +56,7 @@ RUN mkdir $APP_HOME/mediafiles   # Make media files directory
 WORKDIR $APP_HOME
 
 # install dependencies
-RUN apk add libpq==15.5-r0
+RUN apk add libpq==16.1-r0
 COPY --from=builder /usr/src/app/wheels /wheels
 COPY --from=builder /usr/src/app/requirements.txt .
 RUN pip install --no-cache /wheels/*