docs: correct supported OSes for `pedalboard.io.Audiostream` (#371) #1287

Job	Run time
Pre-build on macos-13 with clang	2m 52s
Lint Python (3.12, ubuntu-20.04)	8s
Pre-build on ubuntu-20.04 with clang	2m 54s
Lint C++	35s
Pre-build on ubuntu-20.04 with gcc	2m 15s
Build wheel for ${{ matrix.build }}	0s
Test 1 / 8 with Python 3.12 on ubuntu-20.04	2m 2s
Test 2 / 8 with Python 3.12 on ubuntu-20.04	1m 45s
Test 3 / 8 with Python 3.12 on ubuntu-20.04	2m 14s
Test 4 / 8 with Python 3.12 on ubuntu-20.04	1m 44s
Test 5 / 8 with Python 3.12 on ubuntu-20.04	1m 35s
Test 6 / 8 with Python 3.12 on ubuntu-20.04	2m 1s
Test 7 / 8 with Python 3.12 on ubuntu-20.04	1m 51s
Test 8 / 8 with Python 3.12 on ubuntu-20.04	2m 30s
Test with Python 3.8 + Address Sanitizer	9m 39s
Test with Python 3.9 + Address Sanitizer	9m 8s
Test with Python 3.10 + Address Sanitizer	10m 32s
Test with Python 3.11 + Address Sanitizer	9m 28s
Test with Python 3.12 + Address Sanitizer	9m 2s
Test with Python 3.8 on macos-13	21m 20s
Test with Python 3.9 on macos-13	20m 59s
Test with Python 3.10 on macos-13	20m 2s
Test with Python 3.11 on macos-13	20m 39s
Test with Python 3.12 on macos-13	18m 32s
Test with Python 3.13.0-rc.1 on macos-13	21m 28s
Test with Python 3.8 on ubuntu-20.04	6m 52s
Test with Python 3.9 on ubuntu-20.04	6m 53s
Test with Python 3.10 on ubuntu-20.04	9m 49s
Test with Python 3.11 on ubuntu-20.04	9m 3s
Test with Python 3.12 on ubuntu-20.04	5m 11s
Test with Python 3.13.0-rc.1 on ubuntu-20.04	7m 34s
Test with Python 3.12 on windows-latest	9m 39s
Test with Python 3.13.0-rc.1 on windows-latest	10m 1s
Upload wheels to PyPI	0s
	4h 20m 17s

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