Fix upload returning `malformed summary` error #3865

Job	Run time
Check ${{ matrix.platform.target }}	0s
Generate Matrix	9s
Test Auditwheel	0s
Test Alpine Linux	0s
Test Cross Compile	0s
Test Docker	0s
Test downstream - ${{ matrix.downstream.repository }}	0s
Test Bootstrap (ubuntu-latest)	4s
Test Bootstrap (macos-14)	7s
Test Emscripten	0s
Test MSRV	2m 11s
Test Bootstrap (windows-latest)	10s
Test Pyston	0s
Test (ubuntu-latest, 3.12)	27m 30s
Test (ubuntu-latest, pypy3.10)	11m 13s
Test (macos-14, 3.12)	8m 11s
Test (windows-latest, 3.12)	21m 4s
Test (windows-latest, pypy3.10)	21m 25s
conclusion	1s
	1h 32m 5s

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