chore(deps): update rust crate printpdf to v0.12.7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
printpdf	dependencies	patch	0.12.5 → 0.12.7

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Release Notes

fschutt/printpdf (printpdf)

v0.12.7

PDF streams are actually compressed when optimize is on (#​284). The save
option advertised compression but the Document::compress() call was disabled
and font programs were excluded outright. Page content and embedded font
streams now go out Flate-compressed; /Length1 keeps the DECODED TrueType
program size per ISO 32000 (lopdf rewrites /Length when it compresses), so
readers still load the fonts. Verified against poppler: pdffonts accepts the
output and pdftotext round-trips the text of compressed documents.

Reduced-feature builds are warning-free (#​285). --no-default-features --features gif (and the other reduced combinations) compiled helpers whose
consumers were feature-gated away; the helpers now carry matching gates and
intentionally-unused parameters are underscore-prefixed. No behavior change.

Admits rust-fontconfig 4.6 (the FcScanConfig injection release) through the
existing >=4.4.9, <5 range — printpdf uses none of the affected APIs.

v0.12.6

Break-aware pagination is ON. HTML→PDF now goes through azul's
layout_document_paged_v2 with the full BreakPolicy enabled: break-inside: avoid
pushes boxes below the page break intact, widows/orphans act on paragraph line
counts, line boxes are never torn mid-line across pages, table rows stay whole, and
<thead> repeats on continuation pages (with its height reserved in the break
calculation). Documents that never hit a break constraint paginate exactly as
before; ones that do will see breaks land earlier (pushed up, bounded to a third of
the page height per break). The old fixed-interval slicing is what you get from azul
directly with a default BreakPolicy — printpdf no longer uses it.

The azul dependency moved from the git pin (aaa700097, the rev that shipped the
pagination and changeset refactor) to the published azul 0.0.14 crates.

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