exiv2: 0.27.3 -> 0.27.4

[paperdigits]

Motivation for this change

Update exiv2 patches all known security issues and adds support for reading Canon CR3 files.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• 21.11 Release Notes
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[github-actions]

Successfully created backport PR #128675 for release-21.05.

[sikmir]

Broken on darwin.

[mweinelt]

Broken on darwin.

Needs more information.

[sikmir]

Broken on darwin.

Needs more information.

[ERROR] The output of the testcase mismatch the reference
[INFO] The output has been saved to file /private/var/folders/wf/qxrs82v946n91pb5s71n3dy80000gp/T/nix-build-exiv2-0.27.4.drv-0/source/test/tmp/conversions.out
[INFO] simply_diff:
/private/var/folders/wf/qxrs82v946n91pb5s71n3dy80000gp/T/nix-build-exiv2-0.27.4.drv-0/source/test/data/conversions.out: 204 lines
/private/var/folders/wf/qxrs82v946n91pb5s71n3dy80000gp/T/nix-build-exiv2-0.27.4.drv-0/source/test/tmp/conversions.out: 214 lines
The first mismatch is in line 46:
< Xmp.exif.UserComment                         LangAlt     1  lang="x-default" This is a JIS encoded Exif user comment. Or was it?
> Warning: Charset conversion required but no character mapping functionality available.

----------------------------------------------------------------------
Ran 24 tests in 37.348s

FAILED (errors=1)
make[3]: *** [CMakeFiles/tests.dir/build.make:76: CMakeFiles/tests] Error 1