Invalid YAML in test_cpu suite rejected by yaml-cpp 0.9.0

https://github.com/NixOS/nixpkgs/pull/560590#issuecomment-5564165433

When built against yaml-cpp version 0.9.0, `test_cpu_exec` fails:

```
[ 129/1169] [Config / inactive_color_space_precedence ] - PASSED
/build/source/tests/cpu/Config_tests.cpp:6502:
FAILED: exception thrown from config = OCIO::Config::CreateFromStream(is): "Error: Loading the OCIO profile failed. yaml-cpp: error at line 25, column 1: plain value cannot start with flow indicator character"
Segmentation fault (core dumped) ./test_cpu_exec
```

https://github.com/AcademySoftwareFoundation/OpenColorIO/blob/c52966a6677723d5bd2dbef0ccec3fed9cbc3790/tests/cpu/Config_tests.cpp#L6492-L6502

If you want to continue using funky YAML in this test, then the continued lines of the array with more than just whitespace content must be indented. Example fix (without CLA signature): #2339

Start with tests/cpu/Config_tests.cpp around lines 6492-6502 and run the test_cpu suite against yaml-cpp 0.9.0 to reproduce the failure. Inspect the YAML fixture used by the test; done means test_cpu_exec completes without the YAML parsing error or segmentation fault.

Written by the indexing model from the issue text.