Update requirements files for numpy constraint.

Updating project requirements.txt and GUI service requirements file
(python/gui/dependencies.txt) to constrain numpy version consistent with
default used by worker image builds set up in example.env.

example.env

@@ -199,6 +199,10 @@ PYCHARM_REMOTE_DEBUG_SERVER_PORT_GUI=55875
 ################################################################################
 
 ## Version of Numpy to select when installing (e.g., within Docker images)
+## Note that this probably needs to stay in sync with what is in a few other places
+##  that don't read directly from this file:
+##      - requirement.txt
+##      - python/gui/dependencies.txt
 # Note: mind the consecutive equal signs; the value being set here is '==1.26.4'
 NUMPY_INSTALL_CONSTRAINT===1.26.4
 

python/gui/dependencies.txt

@@ -17,4 +17,4 @@ channels
 channels-redis
 djangorestframework
 psycopg2-binary  # TODO: get source package in future. Note that psycopg2 cannot be used on Mac; psycopg2-binary must be used
-numpy
+numpy==1.26.4

requirements.txt

@@ -20,7 +20,7 @@ python-dotenv
 djangorestframework
 git+https://github.com/noaa-owp/hypy@master#egg=hypy&subdirectory=python
 hydrotools.nwis-client
-numpy
+numpy==1.26.4
 scikit-learn
 minio
 uri