chore: bump up to 4.1.6

[wasabeef]

What does this change?

Feature

• #199 #201 Expose some parameters of SvgPicture (flutter_svg).
  • theme
  • cacheColorFilter

[codecov]

Codecov Report

Merging #202 (87c89d9) into main (64aecb3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #202   +/-   ##
=======================================
  Coverage   98.95%   98.95%           
=======================================
  Files          19       19           
  Lines         574      574           
=======================================
  Hits          568      568           
  Misses          6        6           

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