Bump mypy to 1.15

Lib/_pyrepl/commands.py

@@ -439,7 +439,7 @@ def do(self) -> None:
         import _sitebuiltins
 
         with self.reader.suspend():
-            self.reader.msg = _sitebuiltins._Helper()()  # type: ignore[assignment, call-arg]
+            self.reader.msg = _sitebuiltins._Helper()()  # type: ignore[assignment]
 
 
 class invalid_key(Command):

Lib/test/libregrtest/setup.py

@@ -40,7 +40,7 @@ def setup_process() -> None:
         faulthandler.enable(all_threads=True, file=stderr_fd)
 
         # Display the Python traceback on SIGALRM or SIGUSR1 signal
-        signals = []
+        signals: list[signal.Signals] = []
         if hasattr(signal, 'SIGALRM'):
             signals.append(signal.SIGALRM)
         if hasattr(signal, 'SIGUSR1'):

Tools/requirements-dev.txt

@@ -1,6 +1,6 @@
 # Requirements file for external linters and checks we run on
 # Tools/clinic, Tools/cases_generator/, and Tools/peg_generator/ in CI
-mypy==1.13
+mypy==1.15
 
 # needed for peg_generator:
 types-psutil==6.0.0.20240901