test: Robustify powerprofilesctl version parsing

https://gitlab.freedesktop.org/upower/power-profiles-daemon/-/merge_requests/167
will change the output of `powerprofilesctl version`. Take the
first version number from the ouput instead of assuming that the output
starts with it.

tests/test_power_profiles_daemon.py

@@ -12,6 +12,7 @@
 
 import fcntl
 import os
+import re
 import shutil
 import subprocess
 import sys
@@ -40,9 +41,10 @@ def setUpClass(cls):
     def setUp(self):
         # depending on the installed client version, we need to pick the right template
         try:
-            version = subprocess.run(
+            out = subprocess.run(
                 ["powerprofilesctl", "version"], capture_output=True, text=True, check=True
             ).stdout
+            version = re.search(r'[0-9.]+', out).group(0)
             version = ".".join(version.strip().split(".")[:2])
             template = "power_profiles_daemon" if float(version) < 0.2 else "upower_power_profiles_daemon"
         except subprocess.CalledProcessError as e: