Fix call to base64 on macos #2015

Job	Run time
build on fedora:38 (gcc, false)	1m 48s
build on ubuntu:23.10 (gcc,false)	1m 32s
build on fedora:38 (clang, false)	1m 51s
build on ubuntu:23.10 (clang,false)	1m 30s
build on macos (macos-latest)	1m 54s
build on fedora:37 (gcc, false)	1m 55s
build on ubuntu:23.04 (gcc,false)	1m 27s
build on macos (macos-latest-xlarge)	43s
build on fedora:37 (clang, false)	1m 53s
build on ubuntu:23.04 (clang,false)	1m 37s
build on centos:7 (gcc, true)	1m 53s
build on ubuntu:22.04 (gcc,false)	1m 16s
build on ubuntu:22.04 (clang,true)	1m 29s
build on ubuntu:20.04 (gcc,false)	1m 44s
build on ubuntu:20.04 (clang,false)	1m 37s
build on ubuntu:18.04 (gcc,false)	1m 15s
build on ubuntu:16.04 (gcc,false)	1m 13s
build on ubuntu:14.04 (gcc,false)	1m 12s
build on debian:12 (gcc,false)	1m 28s
build on debian:12 (clang,false)	1m 33s
build on debian:11 (gcc,false)	1m 16s
build on debian:11 (clang,false)	1m 31s
build on debian:10 (gcc,false)	1m 19s
run unit tests (ubuntu:22.04, clang)	8m 20s
run unit tests (centos:7, gcc)	9m 42s
	52m 58s

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