Fix breaking `DiskStorage` library tests #1127

Job	Run time
build (macos-latest, esp8266, gcc)	29m 1s
build (macos-latest, host, gcc)	20m 58s
build (macos-latest, rp2040, gcc)	15m 22s
build (macos-latest, rp2350, gcc)	16m 37s
build (ubuntu-latest, esp8266, gcc)	17m 37s
build (ubuntu-latest, host, clang, Host)	2m 17s
build (ubuntu-latest, host, gcc)	23m 44s
build (ubuntu-latest, host, gcc64, Host)	21m 30s
build (ubuntu-latest, rp2040, gcc)	18m 42s
build (ubuntu-latest, rp2350, gcc)	18m 58s
build (windows-latest, esp8266, gcc)	9m 58s
build (windows-latest, host, gcc)	31m 5s
build (windows-latest, rp2040, gcc)	10m 12s
build (windows-latest, rp2350, gcc)	9m 39s
	4h 5m 40s

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