BUG: Don't close stream passed to PdfWriter.write() #5505

Job	Run time
pytest on windows	7m 0s
pytest on 3.8 (crypto-lib: cryptography)	5m 7s
pytest on 3.9 (crypto-lib: cryptography)	5m 59s
pytest on 3.10 (crypto-lib: cryptography)	5m 39s
Build & verify package	13s
pytest on 3.11 (crypto-lib: cryptography)	5m 25s
Check code style issues	23s
pytest on 3.12 (crypto-lib: cryptography)	7m 20s
pytest on 3.13 (crypto-lib: cryptography)	7m 54s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 34s
pytest on 3.8 (crypto-lib: none)	5m 18s
Combine & check coverage.	15s
	56m 7s

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