ci: Fix usage of codecov. #2308

Job	Run time
test-tcti-config	14m 32s
build-test (ubuntu-20.04, gcc)	4m 18s
test-coverage	4m 37s
scanbuild	6m 43s
build-test (ubuntu-20.04, clang)	4m 23s
build-test (fedora-32, gcc)	4m 34s
test-mbedtls (ubuntu-20.04)	2m 44s
build-test (fedora-32, clang)	5m 8s
test-no-crypto-build	1m 11s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 47s
build-test (opensuse-leap, gcc)	4m 24s
build-test (opensuse-leap, clang)	4m 34s
coverity-test	0s
build-test (ubuntu-22.04, gcc)	4m 25s
build-test (ubuntu-22.04, clang)	4m 32s
test-fuzz	2m 33s
build-test (alpine-3.15, gcc)	3m 47s
build-test (alpine-3.15, clang)	4m 45s
	1h 19m 57s

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