Fix build for ubuntu-20.04 #590

Job	Run time
build-deb-mainnet (goleveldb)	3m 35s
build-deb-mainnet (goleveldb)	8m 54s
build-deb-testnet (goleveldb)	3m 35s
build-deb-testnet (goleveldb)	8m 43s
build-deb-testnet-2004 (goleveldb)	3m 35s
build-deb-testnet-2004 (goleveldb)	8m 54s
check-hw-tool	3m 34s
check-hw-tool	5m 7s
Lib-Checks	8s
Lib-Checks	8s
MacOS-ARM64-CLI	2m 56s
MacOS-ARM64-CLI	2m 56s
native-build-cli (ubuntu-22.04)	2m 41s
native-build-cli (ubuntu-22.04)	2m 41s
publish-localsecret	3m 42s
publish-localsecret	10m 22s
native-build-cli (windows-latest)	3m 39s
native-build-cli (windows-latest)	5m 45s
Ubuntu-2004-CLI	2m 45s
Ubuntu-2004-CLI	2m 45s
native-build-cli (macos-13)	3m 51s
native-build-cli (macos-13)	1m 11s
Release	1s
Release	0s
	1h 31m 28s

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