ci: another try to exclude runs in a matrix #1416

Job	Run time
std::format C++20 GCC-13 Release	3m 38s
std::format C++20 GCC-13 Debug	4m 26s
std::format C++20 Clang-16 Release	2m 6s
std::format C++20 Clang-16 Debug	1m 56s
std::format C++20 Clang-17 Release	6m 7s
std::format C++20 Clang-17 Debug	4m 45s
std::format C++20 Apple Clang 15 Release	56s
std::format C++20 Apple Clang 15 Debug	48s
std::format C++23 GCC-13 Release	3m 41s
std::format C++23 GCC-13 Debug	3m 31s
std::format C++23 Clang-16 Release	1m 49s
std::format C++23 Clang-16 Debug	1m 43s
std::format C++23 Clang-17 Release	5m 55s
std::format C++23 Clang-17 Debug	4m 41s
std::format C++23 Apple Clang 15 Release	1m 20s
std::format C++23 Apple Clang 15 Debug	58s
fmtlib C++20 GCC-12 Release	4m 4s
fmtlib C++20 GCC-12 Debug	3m 53s
fmtlib C++20 GCC-13 Release	3m 56s
fmtlib C++20 GCC-13 Debug	3m 35s
fmtlib C++20 Clang-16 Release	6m 18s
fmtlib C++20 Clang-16 Debug	6m 9s
fmtlib C++20 Clang-17 Release	6m 7s
fmtlib C++20 Clang-17 Debug	4m 35s
fmtlib C++20 Apple Clang 15 Release	3m 45s
fmtlib C++20 Apple Clang 15 Debug	3m 42s
fmtlib C++23 GCC-12 Release	4m 6s
fmtlib C++23 GCC-12 Debug	3m 45s
fmtlib C++23 GCC-13 Release	3m 54s
fmtlib C++23 GCC-13 Debug	3m 31s
fmtlib C++23 Clang-16 Release	6m 2s
fmtlib C++23 Clang-16 Debug	5m 30s
fmtlib C++23 Clang-17 Release	5m 55s
fmtlib C++23 Clang-17 Debug	4m 46s
fmtlib C++23 Apple Clang 15 Release	5m 50s
fmtlib C++23 Apple Clang 15 Debug	4m 2s
Promote Conan package	0s
	2h 21m 45s

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