Merge branch 'tt_raise' into 'master'

Raise version and pin to core 4.xdev11

See merge request !45

pyproject.toml

 [tool.poetry]
 name = "AlekSIS-App-Postbuero"
-version = "3.0.dev2"
+version = "3.0.dev3"
 packages = [
     { include = "aleksis" }
 ]
@@ -30,7 +30,7 @@ priority = "supplemental"
 
 [tool.poetry.dependencies]
 python = "^3.10"
-AlekSIS-Core = "^4.0.0.dev11"
+AlekSIS-Core = "4.0.0.dev11"
 
 [tool.poetry.plugins."aleksis.app"]
 postbuero = "aleksis.apps.postbuero.apps:PostBueroConfig"