Build(deps): Bump pyinstaller from 6.15.0 to 6.16.0

Bumps [pyinstaller](https://github.com/pyinstaller/pyinstaller) from 6.15.0 to 6.16.0.
- [Release notes](https://github.com/pyinstaller/pyinstaller/releases)
- [Changelog](https://github.com/pyinstaller/pyinstaller/blob/develop/doc/CHANGES.rst)
- [Commits](pyinstaller/pyinstaller@v6.15.0...v6.16.0)

---
updated-dependencies:
- dependency-name: pyinstaller
  dependency-version: 6.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -53,7 +53,7 @@ doc = [
     "sphinx_toolbox==4.0.0",
 ]
 freeze = [
-    "pyinstaller==6.15.0",
+    "pyinstaller==6.16.0",
     "packaging==25.0",
     "PyGithub==2.8.1",
     "appdirs==1.4.4",