Bump avro.version from 1.11.3 to 1.12.0 (#1135)

Bumps `avro.version` from 1.11.3 to 1.12.0.

Updates `org.apache.avro:avro` from 1.11.3 to 1.12.0

Updates `org.apache.avro:avro-maven-plugin` from 1.11.3 to 1.12.0

---
updated-dependencies:
- dependency-name: org.apache.avro:avro
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.avro:avro-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Stig Strøm <stig.helge.strom@nav.no>

pom.xml

@@ -30,7 +30,7 @@
         <main-class>no.nav.familie.baks.mottak.LauncherKt</main-class>
         <spring.cloud.version>4.1.4</spring.cloud.version>
         <token-validation-spring.version>5.0.1</token-validation-spring.version>
-        <avro.version>1.11.3</avro.version>
+        <avro.version>1.12.0</avro.version>
 
         <!--suppress UnresolvedMavenProperty  Ligger som secret i github-->
         <sonar.projectKey>${SONAR_PROJECTKEY}</sonar.projectKey>