[libwebp] update to 1.2.1 (#20152)

2021-09-28T00:51:56+00:00

* [libwebp] update to 1.2.1

* update version

* Convert patch CRLF to LF

* update version

* update patch and portfile,cmake

* update version

* update portifile.cmake

* update portfile.cmake

* update version

* update portfile.cmake

* update version

* revert portfile.cmake

* update version

* add trailing line break

* update version

[libwebp] Fixed build error ARM64 Windows 10 (#9300)

2019-12-23T23:19:51+00:00

* [libwebp] Fixed build error ARM64 Windows 10

* [libwebp] Fixed cmake error ARM and ARM64

vcpkg/ports/libwebp/0007-fix-arm-build.patch, branch master

[libwebp] update to 1.2.1 (#20152)

[libwebp] Fixed build error ARM64 Windows 10 (#9300)