fix(deps): update rust crate lopdf to 0.43

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	Pending
lopdf	dependencies	minor	0.42 → 0.43	0.44.0

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Release Notes

J-F-Liu/lopdf (lopdf)

v0.43.0

Compare Source

Feat

• Report encryption status in PdfMetadata

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