BUG: Handle IndirectObject as image filter (#2355) #4107

Job	Run time
Build & verify package	13s
pytest on windows	4m 37s
Check code style issues	18s
pytest on 3.7 (crypto-lib: cryptography)	3m 37s
pytest on 3.8 (crypto-lib: cryptography)	3m 42s
pytest on 3.9 (crypto-lib: cryptography)	3m 46s
pytest on 3.10 (crypto-lib: cryptography)	3m 43s
pytest on 3.11 (crypto-lib: cryptography)	3m 20s
pytest on 3.12 (crypto-lib: cryptography)	4m 49s
pytest on 3.6 (crypto-lib: pycryptodome)	3m 42s
pytest on 3.7 (crypto-lib: none)	3m 56s
Combine & check coverage.	10s
	35m 53s

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