[devtools] Fix `dbgconf` handling when not present in PDSC #375

Job	Run time
coverage	4m 35s
setup / config	4s
matrix_prep / matrix_prep	10s
build (ubuntu-22.04, linux, arm64, csolution, always, false, false)	2m 58s
build (ubuntu-22.04, linux, amd64, csolution, always, true, true)	2m 18s
build (macos-13, darwin, amd64, csolution, publicRepo, true, true)	2m 53s
build (windows-2019, windows, amd64, csolution.exe, always, true, false)	3m 40s
build-swig (macos-14, darwin, arm64, csolution, publicRepo, false, false)	10s
build-swig (macos-13, darwin, amd64, csolution, publicRepo, true, true)	3m 57s
build (macos-14, darwin, arm64, csolution, publicRepo, false, false)	2m 2s
build (windows-2019, windows, arm64, csolution.exe, always, false, false)	4m 51s
build-swig (ubuntu-22.04, linux, arm64, csolution, always, false, false)	12s
build-swig (windows-2019, windows, amd64, csolution.exe, always, true, false)	3m 47s
build-swig (ubuntu-22.04, linux, amd64, csolution, always, true, true)	3m 7s
unittest (macos-14, darwin, arm64, csolution, publicRepo, false, false)	1m 39s
unittest (ubuntu-22.04, linux, arm64, csolution, always, false, false)	2m 49s
unittest (windows-2019, windows, amd64, csolution.exe, always, true, false)	11m 21s
unittest (macos-13, darwin, amd64, csolution, publicRepo, true, true)	5m 48s
unittest (windows-2019, windows, arm64, csolution.exe, always, false, false)	4m 46s
build-swig (windows-2019, windows, arm64, csolution.exe, always, false, false)	6s
unittest (ubuntu-22.04, linux, amd64, csolution, always, true, true)	3m 50s
Publish Tests Results	0s
release	-1s
	1h 5m 2s

Provide feedback