build(deps): bump neo4j in /generators/server/resources (#28806)

Bumps neo4j from 5.26.2 to 5.26.3.

---
updated-dependencies:
- dependency-name: neo4j
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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generators/server/resources/Dockerfile

@@ -31,7 +31,7 @@ FROM cassandra:5.0
 FROM mcr.microsoft.com/mssql/server:2019-CU16-GDR1-ubuntu-20.04
 LABEL ALIAS=mssql
 
-FROM neo4j:5.26.2
+FROM neo4j:5.26.3
 
 FROM hazelcast/management-center:5.7.1
 LABEL ALIAS=hazelcast