Fix call to base64 on macos #788

Job	Run time
Build dist with Linux	43s
build on fedora:37	1m 53s
build on ubuntu:23.10	1m 25s
build on fedora:38	1m 53s
build on ubuntu:23.04	1m 46s
build on centos:7	1m 32s
build on ubuntu:22.04	1m 36s
build on ubuntu:20.04	1m 19s
build on ubuntu:18.04	1m 13s
build on ubuntu:16.04	1m 25s
build on ubuntu:14.04	1m 52s
build on debian:12	2m 30s
build on debian:11	1m 39s
build on debian:10	1m 39s
Build MacOS release (macos-latest, amd)	1m 14s
Build MacOS release (macos-latest-xlarge, arm)	51s
Build Windows release (windows-latest, x86)	9m 12s
Build Windows release (windows-latest, x64)	11m 22s
	45m 4s

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