Upgraded cairo to 2.7.0 & Implement OP_SHA256

[supreme2580]

• [x] issue # https://github.com/keep-starknet-strange/shinigami/issues/114
• [x] follows contribution guide
• [x] code change includes tests

Upgraded to cairo 2.7.0 and implemented OP_SHA256

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Name	Status	Preview	Comments	Updated (UTC)
shinigami	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 13, 2024 1:58am

[supreme2580]

@b-j-roberts it may seem like I touched multiple files, that only happened because I ran scarb fmt before pushing and it formatted other files

[b-j-roberts]

Looks good, I'll merge ASAP. Would you be interested in implementing OP_SHA256 ontop of this PR? You can start on that whenever if so.

I'd recommend an online tool like this to get sample test data https://emn178.github.io/online-tools/sha256.html

[supreme2580]

@b-j-roberts I will implement OP_SHA256 ontop this PR, thank you

[supreme2580]

Hi @b-j-roberts I have just implemented OP_SHA256