CI: Fix build and upgrade spacy and python

Upgrades as far as apparently possible: Python 3.11 and Spacy 2.3.9
diff --git a/requirements.txt b/requirements.txt
index cb41a23..4e3502d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,5 @@
 pip
 wheel
-spacy==2.3.2
+thinc
+spacy==2.3.9
 germalemma