Update Address Regex to Allow Uppercase Hex Characters

[kyleboe]

This will allow people to submit checksum versions of their contract address.

i.e. 0x24Ee6E8D0ffCcA3D73EADA5c8585301F2BC10d60 == 0x24ee6e8d0ffcca3d73eada5c8585301f2bc10d60

Both are equally reachable.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[kyleboe]

Related to the headache in #310

[libotony]

@kyleboe Thank you for the contribution, the lowercased address is intended as a feature. Reason for that is original format is enough for submitting the application, other application use this as a source can freely choose to display either checksum-ed or original address.

If you feel strong on this, I would suggest the PR to be enforce contract address to be checksum-ed.

[kyleboe]

That makes sense. It just wasn't obvious from the documentation. Thanks for the insight into the reasoning!

EDIT: never mind. I'm a doofus. I see now that it's in big bold letters in the Readme lol. Thanks for bearing with my lack of attentiveness