Update Skia expectations for pdfium:1976

Updates Skia expectations after fixing pdfium:1976. This change also
introduces minor anti-aliasing differences due to issues like
pdfium:1856.

Bug: pdfium:1976
Change-Id: I85b568ee09808a82c27a273581b953556217a121
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium_tests/+/103873
Reviewed-by: Nigi <nigi@chromium.org>