Fix psalm error

[vjik]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌
Fixed issues

[what-the-diff[bot]]

PR Summary

• Adjusted Version Constraint for Vimeo/Psalm The constraints on the version of the Vimeo/Psalm library that our project uses have been changed. This will allow us to use either of the two different versions of the library, without causing compatibility issues.

• Updated Documentation in Locale Class The notes on the function of the getBCP47Regex method within the Locale class have been updated. This makes it easier for developers to understand the purpose and return type of the method, saving time and reducing potential for confusion.

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (92facd4) 100.00% compared to head (7ba979a) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #58 +/- ## =========================================== Coverage 100.00% 100.00% Complexity 73 73 =========================================== Files 2 2 Lines 194 194 =========================================== Hits 194 194 ``` | [Files Changed](https://app.codecov.io/gh/yiisoft/i18n/pull/58?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft) | Coverage Δ | | |---|---|---| | [src/Locale.php](https://app.codecov.io/gh/yiisoft/i18n/pull/58?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yiisoft#diff-c3JjL0xvY2FsZS5waHA=) | `100.00% <ø> (ø)` | |

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