(maint) Update CODEOWNERS from tooling to devx #377

Job	Run time
spec (ruby 2.7) / spec	55s
spec (ruby 3.2) / spec	38s
acceptance (ruby 3.2 \| ubuntu-latest) / acceptance	12m 41s
acceptance (ruby 2.7 \| ubuntu-latest) / acceptance	12m 59s
acceptance (ruby 3.2 \| windows-2019) / acceptance	40m 53s
acceptance (ruby 2.7 \| windows-2019) / acceptance	29m 0s
	1h 37m 6s

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