Add support for `inH₂O` pressure unit (#148289) #700

Job	Run time
Collect information & changes data	21s
Prepare pre-commit base	21s
Check script/hassfest/docker/Dockerfile	16s
Prepare dependencies (3.13)	3m 39s
Check Dockerfile	16s
Check Dockerfile.dev	18s
Check ruff	25s
Check other linters	1m 18s
Check ruff-format	16s
Check all requirements	34s
Check hassfest	1m 14s
Audit licenses (3.13)	28s
Check pylint	8m 41s
Check pylint on tests	6m 41s
Check mypy	1m 48s
Dependency review	0s
Run ${{ matrix.postgresql-group }} tests Python ${{ matrix.python-version }}	0s
Run ${{ matrix.mariadb-group }} tests Python ${{ matrix.python-version }}	0s
Run tests Python ${{ matrix.python-version }} (${{ matrix.group }})	0s
Split tests for full run	0s
Run tests Python ${{ matrix.python-version }} (${{ matrix.group }})	0s
Upload test coverage to Codecov (partial suite)	0s
Upload test results to Codecov	0s
Upload test coverage to Codecov (full suite)	0s
	26m 36s

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