Bump flit from 3.10.1 to 3.12.0 (#333)

Bumps [flit](https://github.com/pypa/flit) from 3.10.1 to 3.12.0.
- [Changelog](https://github.com/pypa/flit/blob/main/doc/history.rst)
- [Commits](pypa/flit@3.10.1...3.12.0)

---
updated-dependencies:
- dependency-name: flit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -30,7 +30,7 @@ dev = [
     "coverage[toml]==7.6.10",
     "flake8==7.2.0",
     "flake8-bugbear==24.12.12",
-    "flit==3.10.1",
+    "flit==3.12.0",
     "mypy==1.14.1",
     "ufmt==2.5.1",
     "usort==1.0.8.post1",