Update pyinstaller requirement from ~=5.13 to ~=6.15 in the pip group across 1 directory

[dependabot]

Updates the requirements on pyinstaller to permit the latest version.
Updates pyinstaller to 6.15.0

Release notes

Sourced from pyinstaller's releases.

v6.15.0

Please see the v6.15.0 section of the changelog for a list of the changes since v6.14.2.

Changelog

Sourced from pyinstaller's changelog.

6.15.0 (2025-08-03)

Features

* Add Python 3.14 support. (:issue:`9192`)
Bugfix

* (non-Windows) Ensure that binary dependency analysis creates symbolic
  links in top-level application directory for shared libraries that are
  not resolvable during binary dependency analysis but are nevertheless
  collected due to being explicitly collected by a hook or by the user.
  (:issue:`9186`)
* Attempt to mitigate the issue with module exclusion when a top-level
  package hook excludes its own subpackage to prevent its collection
  in the absence of any external references; such exclusion rule would
  prevent collection of modules from such subpackage even when it is
  supposed to be collected due to an external reference (for example, an
  explicit import from the user's program). (:issue:`9193`)
* Fix a bug in module exclusion part of analysis codepath that would cause
  certain types of relative imports to be misinterpreted and thus fail to
  exclude them. (:issue:`9197`)
6.14.2 (2025-07-04)
Bugfix



Exclude libsocket.so on Solaris as this is specific to the Solaris
installation and causes symbol errors otherwise. (:issue:9171)

Hooks

* Update ``scipy`` hooks for compatibility with ``scipy`` 1.6.0.
  (:issue:`9180`)
Bootloader build

</code></pre>

<ul>

<li>Fix compiling bootloader on Solaris 10 systems. (:issue:<code>9171</code>)</li>

</ul>

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<details>

<summary>Commits</summary>
<ul>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/7c5dcd97a7679c5f3b04c43a0aae0ffeabe7462b&quot;&gt;&lt;code&gt;7c5dcd9&lt;/code&gt;&lt;/a> Release v6.15.0. [skip ci]</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/7c6eca9c0408300fe59fa5d01f1538edc44964ee&quot;&gt;&lt;code&gt;7c6eca9&lt;/code&gt;&lt;/a> bootloader: fix compile errors when building for 32-bit with MSVC</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/31da65c9fc21ef5d7eb6a1e60b01b4cfd43ee8ea&quot;&gt;&lt;code&gt;31da65c&lt;/code&gt;&lt;/a> analysis: account for hook-excluded but externally-referenced subpackages</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/d258b14bc4f09284dc4ebcf05a36de549c0359fb&quot;&gt;&lt;code&gt;d258b14&lt;/code&gt;&lt;/a> tests: add more subpackage exclusion tests</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/42dd4584c917242d41fe3303afe89c7504aadc18&quot;&gt;&lt;code&gt;42dd458&lt;/code&gt;&lt;/a> analysis: module exclusion: fix module name construction for relative imports</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/39caee95cd8ef7f7b04fb0f2f6dfeded1423614a&quot;&gt;&lt;code&gt;39caee9&lt;/code&gt;&lt;/a> tests: add test for subpackage exclusion from top-level package hook</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/a194f0d7b2d02450ae54019d2202974c3b0feb5e&quot;&gt;&lt;code&gt;a194f0d&lt;/code&gt;&lt;/a> tests: run the module exclusion tests only in onedir mode</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/f2c42a3fa39e4ee9dba84e5a2d956256019992d0&quot;&gt;&lt;code&gt;f2c42a3&lt;/code&gt;&lt;/a> ci: enable CI with python 3.14-dev and 3.14t-dev</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/42528d90d719fcbb88b850c57ede84e1854ae407&quot;&gt;&lt;code&gt;42528d9&lt;/code&gt;&lt;/a> bootloader: implement string conversion to UTF-8 for PEP 741 codepath</li>

<li><a href="https://github.com/pyinstaller/pyinstaller/commit/0352806e7ed8a9c3515a214334763d375a57d931&quot;&gt;&lt;code&gt;0352806&lt;/code&gt;&lt;/a> bootloader: implement UTF8-naive PEP 741 configuration</li>

<li>Additional commits viewable in <a href="https://github.com/pyinstaller/pyinstaller/compare/v5.13.0...v6.15.0&quot;&gt;compare view</a></li>

</ul>

</details>
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