bug fixes and update to QGIS 3.34.14

What's Changed

• update to QGIS 3.34
• address issue 107: module 'scipy.integrate' has no attribute 'trapz'
• address issue 106: pytest not catching backend errors w/ Qtest
• address issue 104: relative paths in test data
• address issue 101: WebConnections not being added
• address issue 100: TypeError: setValue(self, value: int): argument 1 has unexpected type 'float'
• address issue 95: vFunc Library: ImportError: Pandas requires version '2.0.1' or newer of 'xlrd'
• address issue 94: update requirements
• address issue 24: launching plots in separate window fails
• address issue 22: raster prep crash on load (Tutorial 5)
• address issue 87: area threshold rebase
• address issue 52: Error: got negative extrapolation
• address issue 43: Model tables are missing table numbers
• address issue 70: Rtail clarification
• address issue 93: Missing Depth-Damage Curves in IBI 2020 Dataset
• remove SOFDA/L3
• fix sphinx documentation build

known issues

• French documentation still needs to be updated.