Tests

Test empty MultiGeometries fixes #221 #814

Job	Run time
static-tests (3.9)	27s
cpython-lxml (3.7)	32s
cpython (3.7)	28s
cpython-lxml (3.8)	37s
cpython (3.8)	30s
pypy (pypy-3.7)	37s
cpython-lxml (3.9)	31s
cpython (3.9)	28s
pypy (pypy-3.8)	49s
cpython-lxml (3.10)	37s
cpython (3.10)	26s
pypy (pypy-3.9)	34s
pypy (pypy-3.10)	34s
cpython-lxml (3.11)	37s
cpython (3.11)	31s
cpython-lxml (3.12)	53s
cpython (3.12)	48s
Build and publish to PyPI and TestPyPI	0s
	9m 59s

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