Update SixLabors.Shapes to 1.0.0-ci0018

[antonfirsov]

Prerequisites

• I have written a descriptive pull-request title
• I have verified that there are no overlapping pull-requests open
• I have verified that I am following matches the existing coding patterns and practice as demonstrated in the repository. These follow strict Stylecop rules 👮.
• I have provided test coverage for my change (where applicable)

Description

Nothing fancy, just the package reference update. Planning to merge this as soon as the CI build finishes.

[codecov]

Codecov Report

Merging #573 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #573   +/-   ##
=======================================
  Coverage   88.63%   88.63%           
=======================================
  Files         843      843           
  Lines       35550    35550           
  Branches     2585     2585           
=======================================
  Hits        31508    31508           
  Misses       3266     3266           
  Partials      776      776

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