Bump spring to 3.4.4

https://github.com/spring-projects/spring-boot/releases/tag/v3.4.4
Signed-off-by: tobias.pobocik <tobias.pobocik@pantheon.tech>

Author: Tobianas

lighty-core/lighty-controller-spring-di/pom.xml

@@ -27,7 +27,7 @@
             <dependency>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-dependencies</artifactId>
-                <version>3.4.3</version>
+                <version>3.4.4</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>

lighty-examples/lighty-controller-springboot-netconf/pom.xml

@@ -11,7 +11,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.4.3</version>
+        <version>3.4.4</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>