Bump com.sap.cloud.environment.servicebinding:java-sap-vcap-services

Bumps [com.sap.cloud.environment.servicebinding:java-sap-vcap-services](https://github.com/SAP/btp-environment-variable-access) from 0.21.0 to 0.31.0.
- [Release notes](https://github.com/SAP/btp-environment-variable-access/releases)
- [Commits](SAP/btp-environment-variable-access@0.21.0...0.31.0)

---
updated-dependencies:
- dependency-name: com.sap.cloud.environment.servicebinding:java-sap-vcap-services
  dependency-version: 0.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

sample-spring-boot/pom.xml

@@ -114,7 +114,7 @@
         <dependency>
             <groupId>com.sap.cloud.environment.servicebinding</groupId>
             <artifactId>java-sap-vcap-services</artifactId>
-            <version>0.21.0</version>
+            <version>0.31.0</version>
         </dependency>
     </dependencies>