Extension Manager Crashes (1.4)
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#### Steps to reproduce:
<!-- Describe what you did (step-by-step) so we can reproduce: -->
- Open Inkscape
- Open Extensions > Manage Extensions
#### What happened?
The Extension Manager crashed with this error:
```
Gtk-Message: 14:29:49.958: Failed to load module "appmenu-gtk-module"
Gtk-Message: 14:29:49.958: Failed to load module "appmenu-gtk-module"
/tmp/.mount_inkscatgVgXq/usr/bin/../lib/libc.so.6: version `GLIBC_2.38' not found (required by /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so)
Failed to load module: /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so
Gtk-Message: 14:29:50.018: Failed to load module "canberra-gtk-module"
An error occured with the extensions manager!
Trying to self-update the package... Failed to update!
Please delete the package manually! (see location below)
Please report this error
------------------------
Report URL: https://gitlab.com/inkscape/extras/extension-manager/-/issues
Location: /tmp/.mount_inkscatgVgXq/usr/share/inkscape/extensions/inkman/inkman/inkman
inkscape-extension-manager: 1.0
Not done
Traceback (most recent call last):
File "manage_extensions.py", line 61, in recovery_run
run(args)
File "manage_extensions.py", line 47, in run
version = options.for_version or get_inkscape_version()
File "/tmp/.mount_inkscatgVgXq/usr/share/inkscape/extensions/inkman/inkman/inkman/utils.py", line 95, in get_inkscape_version
(major, minor) = line.strip().split(" ")[1].split(".")[:2]
ValueError: not enough values to unpack (expected 2, got 1)
```
#### What should have happened?
The extension manager should've opened as normal.
#### Inkscape Version and Operating System:
```
Inkscape Version: Inkscape 1.4-beta2 (9aaf4f3, 2024-07-30)
Compile (Run)
GLib version: 2.64.6
GTK version: 3.24.20 (3.24.20)
glibmm version: 2.64.2
gtkmm version: 3.24.2
libxml2 version: 2.9.10
libxslt version: 1.1.34
Cairo version: 1.16.0 (1.16.0)
Pango version: 1.44.7 (1.44.7)
HarfBuzz version: 2.6.4 (2.6.4)
OS version: Ubuntu 24.04.1 LTS
```
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