Fix for CVE-2023-41034 in eclipse-leshan/leshan (project eclipse__leshan_CVE-2023-41034_1.4.2), commit 4d3e63ac271a817f81fba3e3229c519af7a3049c
Fixed file: leshan-core/src/main/java/org/eclipse/leshan/core/model/DefaultDDFFileValidator.java
Fixed class: DefaultDDFFileValidator (lines 40-69)
Fixed method: getEmbeddedLwM2mSchema (lines 69-73)
Method signature: Schema getEmbeddedLwM2mSchema()