Merge branch 'renovate/pygobject-3.x' into 'master'

Update dependency pygobject to v3.42.1

See merge request varac-projects/indicator_alertmanager!36

requirements.txt

@@ -22,7 +22,7 @@ plac==1.3.5
     # via -r requirements.in
 pycairo==1.21.0
     # via pygobject
-pygobject==3.42.0
+pygobject==3.42.1
     # via -r requirements.in
 pylertalertmanager==0.1.1
     # via -r requirements.in