mineru-3.4.1-released

What's Changed

• fix #5212 : enhance character selection for span filling in PDF processing by @myhloli in #5216
• fix #5215 : integrate support for pdftext 0.7 PageChars and legacy char handling by @myhloli in #5218
• fix #5217 : enhance header and footer classification logic with new boundary checks by @myhloli in #5219

Full Changelog: mineru-3.4.0-released...mineru-3.4.1-released