Update versions and changelog for release of v11.0.43

CHANGELOG/v11r0

+[v11.0.43]
+*Core
+
+NEW: (!1593) Support Pydantic 2
+
+*ProductionManagement
+
+FIX: (!1592) Always use root:// in HistogramMergingAgent
+
+*Bookkeeping
+
+FIX: (!1590) SMOG2: return error instead of partial result in case parameters are wrong
+FIX: (!1588) Setting ExtendedDQOK to a string when querying for files
+
+
+
 [v11.0.42]
 *Bookkeeping