CI: Check test with -j 1 #645

Job	Run time
test-coverage	49m 51s
coverity-test	0s
scanbuild	7m 26s
build-test (ubuntu-20.04, gcc)	49m 56s
test-fuzz	4m 51s
test-mbedtls (ubuntu-20.04)	49m 53s
build-test (ubuntu-20.04, clang)	5m 15s
test-no-crypto-build	1m 45s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	49m 53s
build-test (fedora-32, gcc)	5m 27s
test-tcti-config	14m 44s
build-test (fedora-32, clang)	5m 35s
build-test (opensuse-leap, gcc)	5m 10s
build-test (opensuse-leap, clang)	5m 25s
build-test (ubuntu-22.04, gcc)	49m 52s
build-test (ubuntu-22.04, clang)	5m 28s
build-test (alpine-3.15, gcc)	4m 52s
build-test (alpine-3.15, clang)	5m 41s
	5h 21m 4s

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