Bump io.confluent:kafka-avro-serializer from 7.8.0 to 7.8.1 (#5069)

Bumps
[io.confluent:kafka-avro-serializer](https://github.com/confluentinc/schema-registry)
from 7.8.0 to 7.8.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/confluentinc/schema-registry/commit/db9d3611ccdfdf94e9f7d8cf1f989655cd85dce1"><code>db9d361</code></a>
Set Confluent to 7.8.1, Kafka to 7.8.1.</li>
<li>See full diff in <a
href="https://github.com/confluentinc/schema-registry/compare/v7.8.0...v7.8.1">compare
view</a></li>
</ul>
</details>
<br />


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pom.xml

@@ -52,7 +52,7 @@
         <maven.model.version>3.9.9</maven.model.version>
         <awaitility-kotlin.version>4.2.0</awaitility-kotlin.version>
         <avro.version>1.12.0</avro.version>
-        <confluent.version>7.8.0</confluent.version>
+        <confluent.version>7.8.1</confluent.version>
         <sonar.organization>navikt</sonar.organization>
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
         <sonar.sources>src/main</sonar.sources>