Implement shallow-copy-environ / W1507 (#14241)

<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:

- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->

## Summary

<!-- What's the purpose of the change? What does it do, and why? -->

Related to #970. Implement [`shallow-copy-environ /
W1507`](https://pylint.readthedocs.io/en/stable/user_guide/messages/warning/shallow-copy-environ.html).

## Test Plan

<!-- How was it tested? -->

Unit test

---------

Co-authored-by: Simon Brugman <sbrugman@users.noreply.github.com>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>

crates/ruff_linter/src/codes.rs

@@ -283,6 +283,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Pylint, "W0642") => (RuleGroup::Stable, rules::pylint::rules::SelfOrClsAssignment),
         (Pylint, "W0711") => (RuleGroup::Stable, rules::pylint::rules::BinaryOpException),
         (Pylint, "W1501") => (RuleGroup::Stable, rules::pylint::rules::BadOpenMode),
+        (Pylint, "W1507") => (RuleGroup::Preview, rules::pylint::rules::ShallowCopyEnviron),
         (Pylint, "W1508") => (RuleGroup::Stable, rules::pylint::rules::InvalidEnvvarDefault),
         (Pylint, "W1509") => (RuleGroup::Stable, rules::pylint::rules::SubprocessPopenPreexecFn),
         (Pylint, "W1510") => (RuleGroup::Stable, rules::pylint::rules::SubprocessRunWithoutCheck),