chore(deps): update spring boot to v4

Author: specmatic-builder

pom.xml

@@ -12,7 +12,7 @@
         <kotlin.version>2.2.21</kotlin.version>
         <maven.compiler>17</maven.compiler>
         <specmatic.version>2.34.4</specmatic.version>
-        <spring.boot.version>3.5.9</spring.boot.version>
+        <spring.boot.version>4.0.1</spring.boot.version>
         <cxf.version>4.1.4</cxf.version>
     </properties>