fix: deep targets file path #1009

Job	Run time
examples / multirepo (ubuntu-latest)	9s
examples / client (ubuntu-latest)	4s
examples / multirepo (macos-latest)	27s
examples / client (macos-latest)	12s
examples / multirepo (windows-latest)	1m 27s
examples / client (windows-latest)	1m 2s
examples / root-signing (ubuntu-latest)	10s
examples / repository (ubuntu-latest)	6s
examples / root-signing (macos-latest)	28s
examples / repository (macos-latest)	38s
examples / tuf-client-cli (ubuntu-latest)	12s
examples / root-signing (windows-latest)	1m 34s
examples / repository (windows-latest)	1m 0s
examples / tuf-client-cli (macos-latest)	24s
examples / tuf-client-cli (windows-latest)	1m 30s
linting / golangci-lint	7s
linting / govulncheck	11s
tests / Run (ubuntu-latest)	31s
tests / Run (macos-latest)	48s
tests / Run (windows-latest)	1m 44s
	12m 44s

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