[stubsabot] Bump pyinstaller to 5.12.* (#10287)

Release: https://pypi.org/pypi/pyinstaller/5.12.0
Homepage: https://www.pyinstaller.org/
Diff: pyinstaller/pyinstaller@v5.11.0...v5.12.0

Stubsabot analysis of the diff between the two releases:
 - 2 public Python files have been added: `tests/functional/scripts/pyi_lazy_import.py`, `tests/functional/test_import_lazy_loader.py`.
 - 0 files included in typeshed's stubs have been deleted.
 - 6 files included in typeshed's stubs have been modified or renamed: `PyInstaller/__init__.py`, `PyInstaller/building/build_main.py`, `PyInstaller/building/splash.py`, `PyInstaller/compat.py`, `PyInstaller/lib/modulegraph/modulegraph.py`, `PyInstaller/utils/win32/versioninfo.py`.
 - Total lines of Python code added: 647.
 - Total lines of Python code deleted: 887.

Author: github-actions[bot]

stubs/pyinstaller/METADATA.toml

@@ -1,2 +1,2 @@
-version = "5.11.*"
+version = "5.12.*"
 requires = ["types-setuptools"]