Update conf.py #1320

Job	Run time
download_caravel	1m 51s
download_deps (pdk-with-volare)	4m 10s
download_deps (install_mcw)	3m 27s
download_deps (openlane)	1m 19s
download_deps (setup-timing-scripts)	43s
download_deps (precheck)	2m 1s
hardening (sky130A)	1h 37m 23s
RTL-verification (sky130A)	4m 14s
hardening (sky130B)	1h 28m 14s
RTL-verification (sky130B)	4m 57s
STA (sky130A)	8m 13s
precheck (sky130A)	6h 0m 15s
precheck (sky130B)	24m 16s
	10h 1m 3s

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