Fix handling of uploading of font files #10192

Job	Run time
Core running from build / Core running from build / Linux	2m 2s
Core running from src / Core running from src / Linux	1m 56s
Core running from build / Core running from build / Windows	4m 11s
Core running from src / Core running from src / Windows	3m 32s
Core running from build / Core running from build / MacOS	1m 48s
Core running from src / Core running from src / MacOS	1m 40s
Gutenberg running from build / Gutenberg running from build / Linux	8m 48s
Gutenberg running from src / Gutenberg running from src / Linux	8m 10s
Gutenberg running from build / Gutenberg running from build / Windows	11m 43s
Gutenberg running from build / Gutenberg running from build / MacOS	7m 13s
Gutenberg running from src / Gutenberg running from src / MacOS	6m 47s
Gutenberg running from src / Gutenberg running from src / Windows	11m 44s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 9m 34s

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