Ninja: require Ninja 1.11 for C++ module support

Ben Boeckelrequested to merge
ben.boeckel/cmake:cxxmodules-ninja-1.11 into master

See: #18355 (comment 1296721)
See: https://github.com/ninja-build/ninja/pull/1937

Backport: release:HEAD^2

Edited by Brad King

Merge request reports