Update Driver minimum Version.

See #5078
Original pull request #5080

src/main/antora/modules/ROOT/pages/migration-guide/migration-guide-4.x-to-5.x.adoc

@@ -1,9 +1,13 @@
 [[mongodb.migration.4.x-5.x]]
 = Migration Guide from 4.x to 5.x
 
-Spring Data MongoDB 4.x requires the MongoDB Java Driver 5.5.x +
+Spring Data MongoDB 5.x requires the MongoDB Java Driver 5.6+ +
 To learn more about driver versions please visit the https://www.mongodb.com/docs/drivers/java/sync/current/upgrade/[MongoDB Documentation].
 
+== MongoDB Java Driver 4.x Driver Compatibility Removed
+
+Spring Data MongoDB does no longer support the 4.x MongoDB Java Driver generation.
+
 == UUID Representation Changes
 
 Spring Data no longer defaults UUID settings via its configuration support classes, factory beans, nor XML namespace. +

src/main/antora/modules/ROOT/pages/preface.adoc

@@ -3,7 +3,7 @@
 
 The Spring Data MongoDB 4.x binaries require JDK level 17 and above and https://spring.io/docs[Spring Framework] {springVersion} and above.
 
-In terms of database and driver, you need at least version 4.x of https://www.mongodb.org/[MongoDB] and a compatible MongoDB Java Driver (5.2.x).
+In terms of database and driver, you need at least version 4.x of https://www.mongodb.org/[MongoDB] and a compatible MongoDB Java Driver (5.6+).
 
 [[compatibility.matrix]]
 == Compatibility Matrix
@@ -24,7 +24,7 @@ See also the https://www.mongodb.com/docs/drivers/java/sync/current/compatibilit
 
 |2025.0
 |4.5.x
-|5.3.x
+|5.6.x
 |6.x to 8.x
 
 |2024.1