missing export on base64_encode() (#3748) #22182

Job	Run time
Check if image exists in registry	4s
cancel	6s
licensing	1m 35s
linux (ubuntu-20.04, debug)	1m 36s
linux-fpga (ubuntu-20.04, debug)	1m 35s
linux (ubuntu-20.04, release)	46s
linux (ubuntu-20.04, codecov)	1m 33s
misspell	20s
pyflakes	45s
Build SLES image	0s
Build image	0s
tidy	40s
format	1m 23s
cppcheck	33s
sles	2s
	10m 58s

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