[libwebp] update to 1.2.3

[Neumann-A]

No description provided.

[github-actions]

You have modified or added at least one vcpkg.json where you should check the license field.

If you feel able to do so, please consider adding a "license" field to the following files:

• ports/libwebp/vcpkg.json

Valid values for the license field can be found in the documentation

[github-actions]

You have modified or added at least one vcpkg.json where you should check the license field.

If you feel able to do so, please consider adding a "license" field to the following files:

• ports/libwebp/vcpkg.json

Valid values for the license field can be found in the documentation

[github-actions]

You have modified or added at least one vcpkg.json where you should check the license field.

If you feel able to do so, please consider adding a "license" field to the following files:

• ports/libwebp/vcpkg.json

Valid values for the license field can be found in the documentation

[github-actions]

You have modified or added at least one vcpkg.json where you should check the license field.

If you feel able to do so, please consider adding a "license" field to the following files:

• ports/libwebp/vcpkg.json

Valid values for the license field can be found in the documentation

[JonLiu1993]

All features are tested successfull in the following triplet:

• x86-windows
• x64-windows
• x64-windows-static

[JonLiu1993]

@Neumann-A, looks the ci test failed in x64-osx, this is error log, please take a look:

/Users/vagrant/Data/buildtrees/x264/install-x64-osx-dbg-err.log

install: mkdir /Users/vagrant/Data/packages/x264_x64-osx/Users/vagrant/Data: File exists
make: *** [install-lib-dev] Error 71
make: *** Waiting for unfinished jobs....

/Users/vagrant/Data/buildtrees/qtbase/install-x64-osx-dbg-out.log

clang: error: unable to execute command: Abort trap: 6
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Apple clang version 13.0.0 (clang-1300.0.29.30)
Target: x86_64-apple-darwin21.2.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
clang: note: diagnostic msg: 

[Neumann-A]

@JonLiu1993 cf2199b was green. and the only thing you did was to add a license. As such sich is probably a spurious CI issue after a lot of PR were merged into master. The first problem is probably because CI didn't clean correctly (or parallelism), the second issue is a compiler crash I can do little about.
What is the right action here? -> simply retry the CI run and hope for the best.

[JavierMatosD]

Thanks!