Replace pysha3 dependency

[elopez]

pysha3 is deprecated and does not build correctly in Python 3.11. It should be replaced with a maintained alternative such as pycryptodome.

Some call sites for pysha3 in the optik codebase are:

• optik/optik/common/util.py

  Line 236 in 05e9fd8

  k = sha3.keccak_256()

• optik/optik/common/abi.py

  Line 399 in 05e9fd8

  k = sha3.keccak_256()