Fix ExceptionGroup F821 false positive

crates/ruff/resources/test/fixtures/pyflakes/F821_10.py

@@ -0,0 +1,4 @@
+try:
+    pass
+except ExceptionGroup:
+    pass

crates/ruff/src/rules/pyflakes/mod.rs

@@ -102,6 +102,7 @@ mod tests {
     #[test_case(Rule::UndefinedName, Path::new("F821_7.py"); "F821_7")]
     #[test_case(Rule::UndefinedName, Path::new("F821_8.pyi"); "F821_8")]
     #[test_case(Rule::UndefinedName, Path::new("F821_9.py"); "F821_9")]
+    #[test_case(Rule::UndefinedName, Path::new("F821_10.py"); "F821_10")]
     #[test_case(Rule::UndefinedExport, Path::new("F822_0.py"); "F822_0")]
     #[test_case(Rule::UndefinedExport, Path::new("F822_1.py"); "F822_1")]
     #[test_case(Rule::UndefinedExport, Path::new("F822_2.py"); "F822_2")]

crates/ruff/src/rules/pyflakes/snapshots/ruff__rules__pyflakes__tests__F821_F821_10.py.snap

@@ -0,0 +1,6 @@
+---
+source: crates/ruff/src/rules/pyflakes/mod.rs
+expression: diagnostics
+---
+[]
+

crates/ruff_python/src/builtins.rs

@@ -17,6 +17,7 @@ pub const BUILTINS: &[&str] = &[
     "Ellipsis",
     "EnvironmentError",
     "Exception",
+    "ExceptionGroup",
     "False",
     "FileExistsError",
     "FileNotFoundError",