Bump org.springframework:spring-web from 6.0.0 to 6.0.18

Bumps [org.springframework:spring-web](https://github.com/spring-projects/spring-framework) from 6.0.0 to 6.0.18.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.0.0...v6.0.18)

---
updated-dependencies:
- dependency-name: org.springframework:spring-web
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -18,7 +18,7 @@
     <properties>
         <build.final.name>ROOT</build.final.name>
         <gwt.version>2.5.0</gwt.version>
-        <spring.version>6.0.0</spring.version>
+        <spring.version>6.0.18</spring.version>
         <spring-security.version>5.5.7</spring-security.version>
         <maven.compiler.source>1.7</maven.compiler.source>
         <maven.compiler.target>1.7</maven.compiler.target>