This update for python-PyPDF2 fixes the following issues:
Changes in python-PyPDF2:
CVE-2026-27628: Fixed infinite loop when loading circular /Prev entries in cross-reference streams (bsc#1258940)
CVE-2026-27888: Fixed issue where manipulated FlateDecode XFA streams can exhaust RAM (bsc#1258934)
CVE-2025-55197: Fixed denial of service via craft PDF (bsc#1248089)
CVE-2026-27024: Fixed infinite loop when processing TreeObject (bsc#1258691)
CVE-2026-27025: Fixed long runtimes/large memory usage for large /ToUnicode streams (bsc#1258692)
CVE-2026-27026: Fixed long runtimes for malformed FlateDecode streams (bsc#1258693)
Convert to pip-based build