Bump org.openapitools:jackson-databind-nullable in /src/backend

Bumps [org.openapitools:jackson-databind-nullable](https://github.com/OpenAPITools/jackson-databind-nullable) from 0.2.6 to 0.2.7.
- [Release notes](https://github.com/OpenAPITools/jackson-databind-nullable/releases)
- [Commits](OpenAPITools/jackson-databind-nullable@v0.2.6...v0.2.7)

---
updated-dependencies:
- dependency-name: org.openapitools:jackson-databind-nullable
  dependency-version: 0.2.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/backend/libs/efiling-bom/pom.xml

@@ -34,7 +34,7 @@
         <org.mapstruct.version>1.6.3</org.mapstruct.version>
         <org.mockito.mockito-all.version>1.10.19</org.mockito.mockito-all.version>
         <org.mockito.mockito-core.version>5.17.0</org.mockito.mockito-core.version>
-        <org.openapitools.version>0.2.6</org.openapitools.version>
+        <org.openapitools.version>0.2.7</org.openapitools.version>
         <org.springdoc.version>1.7.0</org.springdoc.version>
         <org.threeten.version>1.7.0</org.threeten.version>
         <ch.qos.logback.version>1.5.18</ch.qos.logback.version>