fix(utils): prefer header-only fmt and spdlog targets #13

Job	Run time
Configuration Coverage	32s
Standalone Package Export Check	46s
Runtime Smoke Checks	43s
Static Analysis	41s
Valgrind Checks	43s
Build (clang, header_only=ON, examples=OFF, provider=system)	31s
Build (clang, header_only=ON, examples=OFF, provider=fallback)	26s
Build (clang, header_only=OFF, examples=ON, provider=fallback)	26s
Build (clang, header_only=ON, examples=ON, provider=fallback)	23s
Build (clang, header_only=OFF, examples=OFF, provider=fallback)	26s
Build (clang, header_only=OFF, examples=ON, provider=system)	40s
Build (clang, header_only=OFF, examples=OFF, provider=system)	28s
Build (gcc, header_only=ON, examples=OFF, provider=system)	20s
Build (clang, header_only=ON, examples=ON, provider=system)	24s
Build (gcc, header_only=OFF, examples=OFF, provider=system)	36s
Build (gcc, header_only=OFF, examples=OFF, provider=fallback)	22s
Build (gcc, header_only=ON, examples=OFF, provider=fallback)	23s
Build (gcc, header_only=ON, examples=ON, provider=fallback)	22s
Build (gcc, header_only=OFF, examples=ON, provider=fallback)	28s
Build (gcc, header_only=ON, examples=ON, provider=system)	21s
Build (gcc, header_only=OFF, examples=ON, provider=system)	50s
Utils Strict CI Summary	0s
	10m 51s

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