Bump ImageSharp and adjust auto-orient logic

[JimBobSquarePants]

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

This pull request primarily updates dependencies and makes a minor logic improvement in the ImageSharpMiddlewareOptions class. The most important changes are:

Dependency Updates:

• Upgraded the SixLabors.ImageSharp package dependency.
• Updated the shared-infrastructure submodule to a newer commit, which may include various upstream changes or fixes.

Middleware Logic Improvement:

• Improved the logic for auto-orienting images in ImageSharpMiddlewareOptions.cs by ensuring the auto-orient command is only added if there are existing commands, preventing unnecessary insertion when the command list is empty.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86%. Comparing base (fefde84) to head (4035d76).

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #398   +/-   ##
===================================
  Coverage    86%    86%           
===================================
  Files        83     83           
  Lines      2453   2453           
  Branches    366    366           
===================================
+ Hits       2119   2122    +3     
+ Misses      223    221    -2     
+ Partials    111    110    -1     

Flag	Coverage Δ
unittests	86% <100%> (+<1%)	⬆️

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