fix: fix invalid session data column name generated by hibernate whic…

…h prevents loading of messages

src/main/java/de/caritas/cob/userservice/api/model/SessionData.java

@@ -63,7 +63,7 @@ public SessionData(
   @NonNull
   private String key;
 
-  @Column(name = "value_")
+  @Column(name = "value")
   @Size(max = 255)
   private String value;