chore(deps): bump jakarta.json:jakarta.json-api in /backend

Bumps [jakarta.json:jakarta.json-api](https://github.com/eclipse-ee4j/jsonp) from 2.1.1 to 2.1.3.
- [Release notes](https://github.com/eclipse-ee4j/jsonp/releases)
- [Commits](jakartaee/jsonp-api@2.1.1-RELEASE...2.1.3-RELEASE)

---
updated-dependencies:
- dependency-name: jakarta.json:jakarta.json-api
  dependency-version: 2.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/pom.xml

@@ -276,7 +276,7 @@
         <dependency>
             <groupId>jakarta.json</groupId>
             <artifactId>jakarta.json-api</artifactId>
-            <version>2.1.1</version>
+            <version>2.1.3</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>