Bump spring.version from 3.5.8 to 3.5.9 (#17)

* Bump spring.version from 3.5.8 to 3.5.9

Bumps `spring.version` from 3.5.8 to 3.5.9.

Updates `org.springframework.boot:spring-boot-dependencies` from 3.5.8 to 3.5.9
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.8...v3.5.9)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 3.5.8 to 3.5.9
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.8...v3.5.9)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 3.5.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-version: 3.5.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update pom.xml

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Conor Heffron <conor.heffron@gmail.com>

Author: dependabot[bot]

pom.xml

@@ -6,13 +6,13 @@
 
     <groupId>ie.example.flag.evaluator</groupId>
     <artifactId>rules-engine</artifactId>
-    <version>1.9-SNAPSHOT</version>
+    <version>2.0-SNAPSHOT</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>25</maven.compiler.source>
         <maven.compiler.target>25</maven.compiler.target>
-        <spring.version>3.5.8</spring.version>
+        <spring.version>3.5.9</spring.version>
         <camunda.version>7.24.0</camunda.version>
     </properties>