ROB: Fall back to non-Adobe Ascii85 format for missing end markers (#… #5774

Job	Run time
Check code style issues	33s
Build & verify package	15s
pytest on windows	6m 57s
pytest on 3.8 (crypto-lib: cryptography)	5m 40s
pytest on 3.9 (crypto-lib: cryptography)	5m 21s
pytest on 3.10 (crypto-lib: cryptography)	5m 17s
pytest on 3.11 (crypto-lib: cryptography)	5m 1s
pytest on 3.12 (crypto-lib: cryptography)	6m 55s
pytest on 3.13 (crypto-lib: cryptography)	6m 43s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 38s
pytest on 3.8 (crypto-lib: none)	5m 37s
Combine & check coverage.	14s
	54m 11s

Provide feedback