fix: pin chardet<6 to suppress RequestsDependencyWarning (#405)

requests 2.32.5 asserts chardet<6 at import time, but sqlfluff and
diff_cover pull in chardet without an upper bound, resolving to 7.1.0
on fresh installs. Add a workspace constraint to cap chardet until a
new requests release ships the fix from psf/requests#7220.

Closes #404

Author: andreatgretel

pyproject.toml

@@ -31,6 +31,9 @@ members = [
 # IMPORTANT: This root is NOT a package. It only defines workspace configuration.
 package = false
 required-version = ">=0.7.10"
+# Pin chardet<6 to avoid RequestsDependencyWarning from requests<2.33
+# (requests checks chardet<6 at import time). See: https://github.com/psf/requests/issues/7219
+constraint-dependencies = ["chardet>=3.0.2,<6"]
 
 [dependency-groups]
 dev = [