Update conf.py #1312

Job	Run time
download_caravel	2m 7s
download_deps (pdk-with-volare)	3m 14s
download_deps (install_mcw)	4m 5s
download_deps (openlane)	1m 16s
download_deps (setup-timing-scripts)	55s
download_deps (precheck)	1m 52s
hardening (sky130A)	1h 16m 50s
hardening (sky130B)	56m 22s
RTL-verification (sky130A)	6m 7s
RTL-verification (sky130B)	5m 7s
precheck (sky130A)	36m 38s
STA (sky130A)	8m 5s
precheck (sky130B)	38m 3s
	4h 0m 41s

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