chore: Bump the gradle-version-updates group in /backend with 2 updates

Bumps the gradle-version-updates group in /backend with 2 updates: [com.nimbusds:nimbus-jose-jwt](https://bitbucket.org/connect2id/nimbus-jose-jwt) and org.openrewrite.rewrite.


Updates `com.nimbusds:nimbus-jose-jwt` from 9.45 to 9.46
- [Changelog](https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt)
- [Commits](https://bitbucket.org/connect2id/nimbus-jose-jwt/branches/compare/9.46..9.45)

Updates `org.openrewrite.rewrite` from 6.26.0 to 6.27.0

---
updated-dependencies:
- dependency-name: com.nimbusds:nimbus-jose-jwt
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-version-updates
- dependency-name: org.openrewrite.rewrite
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: gradle-version-updates
...

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

backend/build.gradle

@@ -9,7 +9,7 @@ plugins {
     id "org.owasp.dependencycheck" version "8.4.3"
     id "com.diffplug.spotless" version "6.25.0"
     id "info.solidsoft.pitest" version "1.15.0"
-    id "org.openrewrite.rewrite" version "6.26.0"
+    id "org.openrewrite.rewrite" version "6.27.0"
 }
 
 spotless {
@@ -40,7 +40,7 @@ dependencies {
     implementation "org.springframework.boot:spring-boot-starter-cache"
     implementation "org.springframework.boot:spring-boot-starter-actuator"
     implementation "org.springframework.boot:spring-boot-starter-oauth2-client"
-    implementation "com.nimbusds:nimbus-jose-jwt:9.45" // Explicit version to fix CVE-2023-52428
+    implementation "com.nimbusds:nimbus-jose-jwt:9.46" // Explicit version to fix CVE-2023-52428
     implementation "com.fasterxml.uuid:java-uuid-generator:${javaUuidGeneratorVersion}"
     implementation "net.logstash.logback:logstash-logback-encoder:${logstashVersion}"
     implementation "com.github.ben-manes.caffeine:caffeine:${caffeineVersion}"