Bumps pyinstaller from 6.19.0 to 6.20.0.

Sourced from pyinstaller's releases.

v6.20.0

Please see the v6.20.0 section of the changelog for a list of the changes since v6.19.0.

Sourced from pyinstaller's changelog.

6.20.0 (2026-04-22)

Bugfix

* (Linux) Fix binary dependency analysis in Termux environment; previously,
  no binary dependencies would be reported due to mismatched ``ldd`` output
  pattern. (:issue:`9402`)
* (Linux) Fix compatibility issues with Termux python 3.13, caused by
  platform being now reported as "android" instead of "linux" (PEP 738).
  (:issue:`9398`)
* (macOS) Fix built-time error when trying to create an .app bundle with
  data collected from a directory that contains symlinked elements.
  (:issue:`9375`)
* Fix the ``forkserver`` spawn mode of ``multiprocessing`` under python
  3.13.13, 3.14.4, and the upcoming 3.15. (:issue:`9423`)
* Remove warning about non-existing ``tclX`` module directory; in some Tcl
  distributions (e.g., Debian-packaged Tcl), this directory is located
  under the main library/data directory, and therefore the stand-alone
  directory neither exists nor needs to be explicitly collected.
  (:issue:`9401`)
Hooks
* Prevent the run-time hook for ``gi.repository.GLib`` from overriding
  the implicit default value of the ``XDG_DATA_DIRS`` environment
  variable (i.e., ``/usr/local/share/:/usr/share/``) when adding the
  frozen application's top-level directory to the list of data directories.
  (:issue:`9422`)
* Update ``gi.repository.Gio`` hook to collect corresponding platform-specific
  typelib (``GioWin32`` or ``GioUnix``), and add hooks for these modules.
  This aims to prevent potential run-time errors, either because the typelib
  is missing, or because it was opportunistically loaded from the run-time
  system and happens to be of incompatible version. (:issue:`9410`)
* Update ``gi.repository.GLib`` hook to collect corresponding platform-specific
  typelib (``GLibWin32`` or ``GLibUnix``), and add hooks for these modules.
  This aims to prevent potential run-time errors, either because the typelib
  is missing, or because it was opportunistically loaded from the run-time
  system and happens to be of incompatible version. (:issue:`9410`)
Bootloader

</code></pre>

<ul>

<li>(Windows) Add new option to the <code>waf</code> build script, <code>--no-cfg</code>,

that allows bootloader to be built without Control Flow Guard (CFG)

enabled. Applicable only when building with MSVC toolchain. (:issue:<code>9352</code>)</li>

</ul>

<!-- raw HTML omitted -->

</blockquote>

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

</details>

<details>

<summary>Commits</summary>
<ul>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/8a6172796b56aa428980c3628663ba08e77ad81e&quot;&gt;&lt;code&gt;8a61727&lt;/code&gt;&lt;/a> Release v6.20.0. [skip ci]</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/151ff76940748960452b3186b6885758d94841dc&quot;&gt;&lt;code&gt;151ff76&lt;/code&gt;&lt;/a> Tests: Requirements: Scheduled weekly dependency update for week 16 (<a href="https://redirect.github.com/pyinstaller/pyinstaller/issues/9431&quot;&gt;#9431&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/4d28a528f8ab8632f7cfa7662fc6fcc45881e741&quot;&gt;&lt;code&gt;4d28a52&lt;/code&gt;&lt;/a> Tests: Requirements: Scheduled weekly dependency update for week 15 (<a href="https://redirect.github.com/pyinstaller/pyinstaller/issues/9429&quot;&gt;#9429&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/881ee26d446a574c9bed14d4e8fd40628c7c1a93&quot;&gt;&lt;code&gt;881ee26&lt;/code&gt;&lt;/a> tests: test_path_encodings: ensure that custom tmp dir exists</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/b42c9421158d9a6069274f1af848549cc527afb7&quot;&gt;&lt;code&gt;b42c942&lt;/code&gt;&lt;/a> tests: test_bundled_shell_script: fix for Termux without /usr symlink</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/afc1b27baac552e985bd3f365eac401db1ca8189&quot;&gt;&lt;code&gt;afc1b27&lt;/code&gt;&lt;/a> ci: termux: use primary mirror and perform initial package upgrade</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/1c29fab7926c3ee4d185587f29ea015b41b955b5&quot;&gt;&lt;code&gt;1c29fab&lt;/code&gt;&lt;/a> Fix multiprocessing with forkserver in python 3.13.13 and 3.14.4</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/3eab93a1c006c9fd2e45174d9f54b8a981cc319d&quot;&gt;&lt;code&gt;3eab93a&lt;/code&gt;&lt;/a> ci: have setup-python check for latest version of python</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/929b186d3f451317deac6eae7663ba2e8726f75f&quot;&gt;&lt;code&gt;929b186&lt;/code&gt;&lt;/a> rthook: do not overwrite XDG_DATA_DIRS fallback value (<a href="https://redirect.github.com/pyinstaller/pyinstaller/issues/9422&quot;&gt;#9422&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/722dbd189a7e8e572af6133848e6057aa44e945f&quot;&gt;&lt;code&gt;722dbd1&lt;/code&gt;&lt;/a> Tests: Requirements: Scheduled weekly dependency update for week 14 (<a href="https://redirect.github.com/pyinstaller/pyinstaller/issues/9419&quot;&gt;#9419&lt;/a&gt;)&lt;/li>

<li>Additional commits viewable in <a href="https://github.com/pyinstaller/pyinstaller/compare/v6.19.0...v6.20.0&quot;&gt;compare view</a></li>

</ul>

</details>
<br />