[bazel] update rules_rust to 0.56 #4483

Job	Run time
Lint (quick)	3m 9s
Airgapped build	8m 25s
Build documentation	8m 38s
Run OTBN smoke Test	2m 33s
Lint (slow)	12m 12s
Verible lint	1m 6s
CW305's Bitstream	22m 49s
Run OTBN crypto tests	2m 47s
Verilated Earl Grey	1h 4m 52s
Verilated English Breakfast	11m 17s
Build Docker Containers	2m 46s
Build and test software	16m 53s
Earl Grey for CW310 / Build bitstream	1h 7m 36s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 9m 56s
Earl Grey for CW340 / Build bitstream	1h 30m 10s
CW310 Test ROM Tests / FPGA test	6m 6s
CW310 ROM Tests / FPGA test	42m 7s
CW310 SiVal ROM_EXT Tests / FPGA test	44m 56s
CW310 SiVal Tests / FPGA test	29m 4s
CW310 ROM_EXT Tests / FPGA test	13m 40s
CW310 Manufacturing Tests / FPGA test	35m 31s
Cache bitstreams to GCP	0s
CW340 ROM_EXT Tests / FPGA test	7m 44s
CW340 ROM Tests / FPGA test	55s
CW340 SiVal Tests / FPGA test	19m 31s
CW340 SiVal ROM_EXT Tests / FPGA test	6m 0s
CW340 Test ROM Tests / FPGA test	4m 37s
CW340 Manufacturing Tests / FPGA test	40m 7s
Verify FPGA jobs	20s
	10h 35m 47s

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