Bump io.confluent:kafka-avro-serializer from 7.5.0 to 7.5.3

Bumps [io.confluent:kafka-avro-serializer](https://github.com/confluentinc/schema-registry) from 7.5.0 to 7.5.3.
- [Commits](https://github.com/confluentinc/schema-registry/commits)

---
updated-dependencies:
- dependency-name: io.confluent:kafka-avro-serializer
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -17,7 +17,7 @@
     <properties>
         <avro.version>1.11.2</avro.version>
         <brukernotifikasjoner.version>2.5.2</brukernotifikasjoner.version>
-        <confluent.version>7.5.0</confluent.version>
+        <confluent.version>7.5.3</confluent.version>
         <commons-text.version>1.10.0</commons-text.version>
         <domain.version>2.0.79</domain.version>
         <eksternvarsling.version>08271806</eksternvarsling.version>