Add support for NWB schema 2.7.0 #763

Job	Run time
linux-gallery-python3.8-minimum	2m 9s
linux-gallery-python3.11-upgraded	2m 27s
windows-gallery-python3.8-minimum	3m 31s
windows-gallery-python3.11-upgraded	3m 39s
conda-linux-python3.11-ros3	2m 35s
linux-python3.8-minimum	3m 27s
linux-python3.11-upgraded	3m 2s
windows-python3.8-minimum	4m 36s
windows-python3.11-upgraded	4m 37s
macos-python3.8-minimum	6m 15s
conda-linux-python3.8-minimum	3m 42s
conda-linux-python3.11-upgraded	3m 25s
conda-linux-gallery-python3.11-ros3	2m 14s
Deploy pre-release from dev	0s
	45m 39s

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