Increase portability of testbank (follow-up)

[veenstrajelmer]

Codecov was significantly increased in #447 already. Some requireslocaldata testcases are still left though. Prevent p-drive links in unit/systemtests of testbank to increase github codecov.

Check coverage when running pytest -m "not acceptance" --cov=dfm_tools (includes requireslocaldata) locally, compare to coverage on github py312 test.

The requireslocaldata testcases are:

• test_examples.py::test_run_examples: all p-drive datasets used in example files (this is not really an issue anymore since the test coverage is quite high these days
• test_get_nc_helpers.py::test_rename_fouvars_tidal: 'p:\1230882-emodnet_hrsm\GTSMv3.0EMODnet\EMOD_MichaelTUM_yearcomponents\GTSMv4.1_yeartide_2014_2.20.06\output\gtsm_model_0000_fou.nc'
• test_interpolate_grid2bnd.py::test_plipointsDataset_fews_accepted: r'p:\dflowfm\maintenance\JIRA\06000-06999\06187\C01\salinity_DCSM-FM_OB_all.nc'
• test_interpolate_grid2bnd.py::test_interpolate_tide_to_plipoints: several tidal datasets on P-drive
• test_observations.py: all gesla3 tests are skipped on github
• test_xugrid_helpers.py::test_open_dataset_curvilinear: r'P:\archivedprojects\11206304-futuremares-rawdata-preps\data\CMIP6_BC\CMCC-ESM2\vo_Omon_CMCC-ESM2_historical_r1i1p1f1_gn_*.nc'