Log Message:
py-pdf: update to 3.12.0.

3.12.0

What's Changed

We finally fully support modern cryptography for encrypting and decrypting PDF files.
A big thank you to @exiledkingcc who did this work a while a go 🙏

New Features (ENH)

    Add AES support for encrypting PDF files (#1918, #1935, #1936, #1938) by \ 
@exiledkingcc
    Add page deletion feature to PdfWriter (#1843) by @pubpub-zz

Bug Fixes (BUG)

    PdfReader.get_fields() attempts to delete non-existing index \ 
"/Off" (#1933) by @dmjohnsson23
    Remove unused objects when cloning_from (#1926) by @pubpub-zz
    Add the TK.SIZE into the trailer (#1911) by @talcher
    add_named_destination() maintains named destination list sort order (#1930) \ 
by @robertkearns

3.11.1

Bug Fixes (BUG)

    Cascaded filters in image objects (#1913) by @pubpub-zz
    Append pdf with named destination using numbers for pages (#1858) by @pubpub-zz
    Ignore "/B" fields only on pages in PdfWriter.append() (#1875) by \ 
@pubpub-zz