Update requirements.txt #1322

Job	Run time
download_caravel	1m 42s
download_deps (pdk-with-volare)	2m 34s
download_deps (install_mcw)	5m 10s
download_deps (openlane)	1m 2s
download_deps (setup-timing-scripts)	55s
download_deps (precheck)	1m 13s
RTL-verification (sky130A)	5m 28s
RTL-verification (sky130B)	3m 53s
hardening (sky130A)	1h 13m 9s
hardening (sky130B)	56m 27s
STA (sky130A)	11m 41s
precheck (sky130A)	36m 58s
precheck (sky130B)	36m 28s
	3h 56m 40s

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