⬆️ Update pyinstaller requirement from ~=6.14.2 to ~=6.15.0

Updates the requirements on [pyinstaller](https://github.com/pyinstaller/pyinstaller) to permit the latest version.
- [Release notes](https://github.com/pyinstaller/pyinstaller/releases)
- [Changelog](https://github.com/pyinstaller/pyinstaller/blob/develop/doc/CHANGES.rst)
- [Commits](pyinstaller/pyinstaller@v6.14.2...v6.15.0)

---
updated-dependencies:
- dependency-name: pyinstaller
  dependency-version: 6.15.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -10,7 +10,7 @@ tkinter-tooltip~=3.1.2 # Tooltips for configuration editor
 uptime~=3.0.1          # For System Uptime 
 requests~=2.32.4       # HTTP library
 ping3~=4.0.8           # ICMP ping implementation using raw socket
-pyinstaller~=6.14.2    # bundles a Python application and all its dependencies into a single package
+pyinstaller~=6.15.0    # bundles a Python application and all its dependencies into a single package
 Pillow~=11.3.0         # Image generation
 
 # Efficient image serialization