Log message:
py-pdf: update to 3.11.0.

## Version 3.11.0, 2023-06-23

### New Features (ENH)
-  Add page_number property (#1856)

### Bug Fixes (BUG)
- File expansion when updating with Page Contents (#1906)
- Missing Alternate in indexed/ICCbased colorspaces (#1896)

## Version 3.10.0, 2023-06-18

### New Features (ENH)
-  Extraction of inline images (#1850)
-  Add capability to replace image (#1849)
-  Extend images interface by returning an ImageFile(File) class (#1848)
-  Add set_data to EncodedStreamObject (#1854)

### Bug Fixes (BUG)
-  Fix RGB FlateEncode Images(PNG) and transparency (#1834)
-  Generate static appearance for fields (#1864)

Log message:
py-pdf: updated to 3.9.1

Version 3.9.1, 2023-06-04

Deprecations (DEP)
- Deprecate PdfMerger

Bug Fixes (BUG)
- Ignore UTF-8 decode errors

Robustness (ROB)
- Handle missing /Type entry in Page tree

Log message:
py-pdf: not for Python 2

Log message:
textproc/py-pdf: import py-pdf-3.9.0

pypdf is a free and open-source pure-python PDF library capable of
splitting, merging, cropping, and transforming the pages of PDF
files. It can also add custom data, viewing options, and passwords
to PDF files. pypdf can retrieve text and metadata from PDFs as
well.