[ETHEREUM-CONTRACTS] relax solidity pragma ^0.8.23 & update to 0.8.26

[hellwolf]

• relax solidity pragma ^0.8.23
• [solidity-semantic-money] adapt to latet forge-std
• to use solc 0.8.26
• [ethereum-contracts] move mocks for foundry to foundry folder
• ci.canary.yml: upgrade-contracts disabled

[github-actions[bot]]

Changelog Reminder

Reminder to update the CHANGELOG.md for any of the modified packages in this PR.

• [x] CHANGELOG.md modified
• [x] Double check before merge

[hellwolf]

@d10r this one too, please

[hellwolf]

Upgrading solidity to 0.8.26.

Found an foundry bug https://github.com/foundry-rs/foundry/issues/8342 which resulted a difficult to find culprit file.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.53%. Comparing base (668d475) to head (d43812c).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #1981 +/- ## ======================================= Coverage 88.53% 88.53% ======================================= Files 119 119 Lines 7389 7389 Branches 977 976 -1 ======================================= Hits 6542 6542 Misses 845 845 Partials 2 2 ``` | [Flag](https://app.codecov.io/gh/superfluid-finance/protocol-monorepo/pull/1981/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=superfluid-finance) | Coverage Δ | | |---|---|---| | [ethereum-contracts](https://app.codecov.io/gh/superfluid-finance/protocol-monorepo/pull/1981/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=superfluid-finance) | `94.04% <ø> (ø)` | | | [sdk-core](https://app.codecov.io/gh/superfluid-finance/protocol-monorepo/pull/1981/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=superfluid-finance) | `88.53% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=superfluid-finance#carryforward-flags-in-the-pull-request-comment) to find out more.

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[github-actions[bot]]

XKCD Comic Relif

Link: https://xkcd.com/1981