deb: fix debug src path #312

Job	Run time
coverage - measure	1m 42s
sanitizer - arm64v8/debian:trixie \| ubuntu-24.04-arm	2m 51s
sanitizer - debian:trixie \|	1m 22s
sanitizer - arm32v7/debian:trixie \| ubuntu-24.04-arm	2m 10s
linux - debian:bookworm	1m 33s
linux - arm32v7/debian:bookworm	2m 9s
linux - arm64v8/debian:bookworm	2m 8s
ios	2m 29s
android	4m 41s
linux - arm64v8/debian:trixie	2m 21s
linux - arm32v7/debian:trixie	2m 26s
linux - debian:trixie	1m 33s
conan - emscripten (debian, bookworm)	2m 44s
linux - ubuntu:noble	1m 24s
vcpkg - linux \|	4m 39s
vcpkg - windows	4m 51s
lint	2m 9s
	43m 12s

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