Updating pygrib version to fix deprecation issue

Author: rabellino-noaa

docker/python-sci/Dockerfile

@@ -28,7 +28,7 @@ RUN conda config --set solver classic && \
     numpy==1.26.4 \
     netcdf4==1.6.5 \
     h5netcdf==1.3.0 \
-    pygrib==2.1.5 \
+    pygrib==2.1.6 \
     awscli==1.32.41 \
     jsonschema==4.21.1 \
     s5cmd=2.2.2 \