CSHS-CWRA/RavenPy: v0.19.1

Breaking changes scipy is no longer pinned below v1.16.0, as newer statsmodels is now compatible with modern scipy versions. (PR #524) black and isort have been replaced with ruff for code formatting and linting. This change simplifies the development workflow and improves code consistency. (PR #525). Internal changes Updates the notebooks and re-runs all of them to ensure they are working with latest libraries. (PR #524) Adds a few missing testing data files to the pooch registry.txt file that are necessary for running the notebooks. (PR #524) Slightly adjusted CI workflows for security and behaviour improvements. (PR #524) Obsolete support code for handling older owslib versions has been removed from ravenpy.utilities.geoserver. (PR #525). Code formatting and linting rules have been modified to use the newer ruff configurations. The formatting changes have been effected in the entire codebase. (PR #525).