chore(deps): bump io.modelcontextprotocol.sdk:mcp-spring-webflux

Bumps [io.modelcontextprotocol.sdk:mcp-spring-webflux](https://github.com/modelcontextprotocol/java-sdk) from 0.18.2 to 0.18.3.
- [Release notes](https://github.com/modelcontextprotocol/java-sdk/releases)
- [Commits](modelcontextprotocol/java-sdk@v0.18.2...v0.18.3)

---
updated-dependencies:
- dependency-name: io.modelcontextprotocol.sdk:mcp-spring-webflux
  dependency-version: 0.18.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

samples/security/oauth/authorization-server/META-INF/maven/org.springframework.ai/spring-ai-autoconfigure-mcp-client/pom.xml

@@ -63,7 +63,7 @@
     <dependency>
       <groupId>io.modelcontextprotocol.sdk</groupId>
       <artifactId>mcp-spring-webflux</artifactId>
-      <version>0.18.2</version>
+      <version>0.18.3</version>
       <scope>compile</scope>
       <optional>true</optional>
     </dependency>