add clang-22 and cuda-13.2 to the CI test matrix

Author: ericniebler

.github/workflows/ci.cpu.yml

@@ -24,6 +24,8 @@ jobs:
           - { name: "CPU (clang 16, Debug, TSAN)",   build: "Debug",   tag: llvm16-cuda12.9, cxxstd: "20", cxxflags: "-fsanitize=thread" }
           - { name: "CPU (clang 16, Release)",       build: "Release", tag: llvm16-cuda12.9, cxxstd: "20", cxxflags: "-stdlib=libc++" }
           - { name: "CPU (clang 16, Release, ASAN)", build: "Release", tag: llvm16-cuda12.9, cxxstd: "20", cxxflags: "-stdlib=libc++ -fsanitize=address -fsanitize-ignorelist=/home/coder/stdexec/sanitizer-ignorelist.txt" }
+          - { name: "CPU (clang 22, Debug)",         build: "Debug",   tag: llvm22-cuda13.2, cxxstd: "23", cxxflags: "-stdlib=libc++" }
+          - { name: "CPU (clang 22, Release)",       build: "Release", tag: llvm22-cuda13.2, cxxstd: "23", cxxflags: "-stdlib=libc++" }
           - { name: "CPU (gcc 12, Debug)",           build: "Debug",   tag: gcc12-cuda12.9,  cxxstd: "20", cxxflags: "", }
           - { name: "CPU (gcc 12, Release)",         build: "Release", tag: gcc12-cuda12.9,  cxxstd: "20", cxxflags: "", }
           # With the following config, 2 tests mysteriously time out, but only in CI and not locally.