Bump actions/add-to-project from 0.5.0 to 0.6.0 #6058

Job	Run time
Black (Python3.9)	1m 38s
Black (Python3.9)	1m 38s
py39-prefetch-coverage (Python3.9, windows-latest)	6m 45s
py39-prefetch-coverage (Python3.9, windows-latest)	6m 45s
test-conda-Python3.9	4m 19s
test-conda-Python3.9	6m 36s
py310-coverage (Python3.10, macos-latest)	4m 6s
py310-coverage (Python3.10, macos-latest)	4m 6s
test-${{ matrix.tox-env }} (Python${{ matrix.python-version }})	0s
test-${{ matrix.tox-env }} (Python${{ matrix.python-version }})	0s
test-conda-Python3.12	4m 48s
test-conda-Python3.12	7m 26s
py39-coverage-sbck (Python3.9, ubuntu-latest)	5m 8s
py39-coverage-sbck (Python3.9, ubuntu-latest)	5m 8s
py310-coverage-lmoments (Python3.10, ubuntu-latest)	8m 26s
py310-coverage-lmoments (Python3.10, ubuntu-latest)	8m 26s
py311-coverage-sbck (Python3.11, ubuntu-latest)	6m 31s
py311-coverage-sbck (Python3.11, ubuntu-latest)	6m 31s
py312-coverage-numba (Python3.12, ubuntu-latest)	6m 5s
py312-coverage-numba (Python3.12, ubuntu-latest)	6m 5s
notebooks_doctests (Python3.10, ubuntu-latest)	6m 41s
notebooks_doctests (Python3.10, ubuntu-latest)	6m 41s
offline-prefetch (Python3.11, ubuntu-latest)	4m 31s
offline-prefetch (Python3.11, ubuntu-latest)	4m 31s
finish	0s
finish	15s
	2h 3m 6s

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