Change #270221

Comments

appveyor: bump 3 VS2022 jobs to VS2026
Also:
- install CMake 4.2.1 manually for VS2026 jobs, because the preinstalled
  version (4.1.2) does not yet support the compatible generator.
- VisualStudioSolution VS2010 job to VS2015 worker image (from VS2013).
  VS2013 is no longer listed on the AppVeyor support page.
- downgrade OpenSSL to 3.5 (from 3.6) for the VS2022 job, to add
  variation.

Note: the jobs run much slower after bumping to VS2026. This seems to be
due slower configure and build steps.

Refs:
https://github.com/appveyor/website/commit/9ef4152eda92d0f8a486ab67824a6d420e1151e4
https://github.com/appveyor/website/pull/912
https://github.com/appveyor/build-images/commit/fa7f7b928ebee4e2cfc6eccc953d2dec95374114
https://github.com/appveyor/build-images/pull/175
https://www.appveyor.com/docs/windows-images-software/
https://cmake.org/cmake/help/latest/generator/Visual%20Studio%2018%202026.html

Closes #21939

Changed files

• appveyor.sh
• appveyor.yml