FIX-#7379: Fix imul performing addition instead of multiplication #16077

Job	Run time
execution-filter	7s
python-filter	1s
lint (flake8)	19s
lint (mypy)	2m 11s
Test API, headers and no-engine mode	1m 56s
test-clean-install-ubuntu	3m 7s
test-clean-install-windows	3m 6s
test-internals	7m 0s
test-asv-benchmarks	18s
Test BaseOnPython execution, Python 3.9"	16m 30s
test-ubuntu (engine python, python 3.9, group_1)	19m 53s
test-ubuntu (engine unidist ${{ matrix.unidist-backend }}, python ${{ matrix.python-version }})	0s
test experimental	8m 12s
test-windows (engine python, python 3.9, group_1)	33m 44s
test-ubuntu-sanity (engine ray, python 3.9)	18m 34s
test-spreadsheet (engine ray, python 3.9)	2m 10s
test-native-dataframe-mode python ${{ matrix.python-version }})	0s
test-ubuntu-sanity (engine dask, python 3.9)	40m 54s
test-spreadsheet (engine dask, python 3.9)	2m 0s
test-ubuntu-sanity (engine unidist, python 3.9)	15m 52s
test-windows-sanity (engine ray, python 3.9)	22m 43s
test-windows-sanity (engine dask, python 3.9)	34m 19s
test-windows-sanity (engine unidist, python 3.9)	24m 46s
merge-coverage-artifacts	6s
upload-coverage	19s
	4h 18m 7s

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