[software] Update python requirements #1214

Job	Run time
tc-gcc	2m 1s
riscv-isa-sim	11s
tc-llvm	3m 54s
verilator	11s
check-opcodes	5s
verilator-model (minpool)	12s
verilator-model (mempool)	24s
check-bootrom	14s
unit-test	2m 35s
build-apps-omp (minpool)	30s
build-apps-gcc (minpool)	39s
build-apps-omp (mempool)	28s
build-apps-gcc (mempool)	36s
run-apps-gcc	0s
build-apps-llvm (minpool)	1m 14s
tc-halide	52s
build-apps-llvm (mempool)	1m 13s
build-apps-halide	0s
run-apps-halide	0s
run-apps-llvm	0s
clean-up-compile-runs (minpool)	5s
clean-up	2s
clean-up-compile-runs (mempool)	5s
	15m 31s

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