Bump confluent.version from 7.7.1 to 7.8.0

Bumps `confluent.version` from 7.7.1 to 7.8.0.

Updates `io.confluent:kafka-schema-registry-client` from 7.7.1 to 7.8.0
- [Commits](confluentinc/schema-registry@v7.7.1...v7.8.0)

Updates `io.confluent:kafka-connect-avro-converter` from 7.7.1 to 7.8.0
- [Commits](confluentinc/schema-registry@v7.7.1...v7.8.0)

Updates `io.confluent:kafka-avro-serializer` from 7.7.1 to 7.8.0
- [Commits](confluentinc/schema-registry@v7.7.1...v7.8.0)

---
updated-dependencies:
- dependency-name: io.confluent:kafka-schema-registry-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.confluent:kafka-connect-avro-converter
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.confluent:kafka-avro-serializer
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -22,7 +22,7 @@
         <jvmTarget>21</jvmTarget>
         <kotlin.version>2.1.0</kotlin.version>
         <mockk.version>1.13.13</mockk.version>
-        <confluent.version>7.7.1</confluent.version>
+        <confluent.version>7.8.0</confluent.version>
         <prosessering.version>2.20241205111631_afe703f</prosessering.version>
 
         <felles.version>3.20241121151626_836e7ca</felles.version>