Bump pyinstaller from 5.0.1 to 5.1 in /backend

[dependabot]

Bumps pyinstaller from 5.0.1 to 5.1.

Release notes

Sourced from pyinstaller's releases.

2.1 - last Python 2-only release.

• Rewritten manual explaining even very basic topics.
• PyInstaller integration with setuptools (direct installation with easy_install or pip from PYPI - https://pypi.python.org/pypi). After installation there will be available command 'pyinstaller' for PyInstaller usage.
• (Windows) Alter --version-file resource format to allow unicode support.
• (Windows) Fix running frozen app running from paths containing foreign characters.
• (Windows) Fix running PyInstaller from paths containing foreign characters.
• (OSX) Implement --icon option for the .app bundles.
• (OSX) Add argv emulation for OpenDocument AppleEvent (see manual for details).
• Rename --buildpath to --workpath.
• Created app is put to --distpath.
• All temporary work files are now put to --workpath.
• Add option --clean to remove PyInstaller cache and temporary files.
• Add experimental support for Linux arm.
• Minimum suported Python version is 2.4.
• Add import hooks for docutils, jinja2, sphinx, pytz, idlelib, sqlite3.
• Add import hooks for IPython, Scipy, pygst, Python for .NET.
• Add import hooks for PyQt5, Bacon, raven.
• Fix django import hook to work with Django 1.4.
• Add rthook for twisted, pygst.
• Add rthook for pkg_resource. It fixes the following functions for frozen app pkg_resources.resource_stream(), pkg_resources.resource_string().
• Better support for pkg_resources (.egg manipulation) in frozen executables.
• Add option --runtime-hook to allow running custom code from frozen app before loading other Python from the frozen app. This is usefull for some specialized preprocessing just for the frozen executable. E.g. this option can be used to set SIP api v2 for PyQt4.
• Fix runtime option --Wignore.
• Rename utils to lowercase: archieve_viewer.py, bindepend.py, build.py, grab_version.py, make_comserver.py, makespec.py, set_version.py.
• (OSX) Fix missing qt_menu.nib in dist directory when using PySide.
• (OSX) Fix bootloader compatibility with Mac OS X 10.5
• (OSX) Search libpython in DYLD_LIBRARY_PATH if libpython cannot be found.
• (OSX) Fix Python library search in virtualenv.
• Environment variable PYTHONHOME is now unset and path to python home is set in bootloader by function Py_SetPythonHome().This overrides sys.prefix and sys.exec_prefix for frozen application.
• Python library filename (e.g. python27.dll, libpython2.7.so.1.0, etc) is embedded to the created exe file. Bootloader is not trying several filenames anymore.
• Frozen executables now use PEP-302 import hooks to import frozen modules and C extensions. (sys.meta_path)
• Drop old import machinery from iu.py.
• Drop own code to import modules from zip archives (.egg files) in frozen executales. Native Python implementation is kept unchanged.
• Drop old crypto code. This feature was never completed.
• Drop bootloader dependency on Python headers for compilation.
• (Windows) Recompile bootloaders with VS2008 to ensure win2k compatibility.
• (Windows) Use 8.3 filenames for homepath/temppath.

... (truncated)

Changelog

Sourced from pyinstaller's changelog.

5.1 (2022-05-17)

Bugfix

* (Windows) Fix the regression causing the (relative) spec path ending up
  prepended to relative icon path twice, resulting in icon not being found.
  (:issue:`6788`)
* Prevent collection of an entire Python site when using
  :func:`~PyInstaller.utils.hooks.collect_data_files` or
  :func:`~PyInstaller.utils.hooks.collect_dynamic_libs` for single-file modules
  (:issue:`6789`)
* Prevent the hook utility functions, such as
  :func:`~PyInstaller.utils.hooks.collect_submodules`,
  :func:`~PyInstaller.utils.hooks.collect_data_files`, and
  :func:`~PyInstaller.utils.hooks.collect_dynamic_libs`, from failing to
  identify a package when its PEP451-compliant loader does not implement
  the optional ``is_package`` method. (:issue:`6790`)
* The :func:`~PyInstaller.utils.hooks.get_package_paths` function now
  supports PEP420 namespace packages - although for backwards-compatibility
  reasons, it returns only the first path when multiple paths are
  present. (:issue:`6790`)
* The hook utility functions
  :func:`~PyInstaller.utils.hooks.collect_submodules`,
  :func:`~PyInstaller.utils.hooks.collect_data_files`, and
  :func:`~PyInstaller.utils.hooks.collect_dynamic_libs`) now support
  collection from PEP420 namespace packages. (:issue:`6790`)
* The user-provided spec file path and paths provided via :option:`--workpath`
  and :option:`--distpath` are now resolved to absolute full paths before being
  passed to PyInstaller's internals. (:issue:`6788`)
Hooks

* Exclude ``doctest`` in the ``pickle`` hook. Update ``PySide2``, ``PySide6``,
  ``PyQt5``, and ``PyQt6`` hooks with hidden imports that were previously
  pulled in by ``doctest`` (that was in turn pulled in by ``pickle``).
  (:issue:`6797`)
Bootloader

</code></pre>

<ul>

<li>(Windows) Update the bundled <code>zlib</code> sources to v1.2.12. (:issue:<code>6804</code>)</li>

</ul>

<p>Bootloader build</p>

<pre><code>&lt;/tr&gt;&lt;/table&gt;

</code></pre>

</blockquote>

<p>... (truncated)</p>

</details>

<details>

<summary>Commits</summary>
<ul>

<li>See full diff in <a href="https://github.com/pyinstaller/pyinstaller/commits&quot;&gt;compare view</a></li>

</ul>

</details>
<br />



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