Bump org.apache.avro:avro in /workshops/txeventq-kafka/springboot-kafka

Bumps org.apache.avro:avro from 1.11.0 to 1.11.4.

---
updated-dependencies:
- dependency-name: org.apache.avro:avro
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

workshops/txeventq-kafka/springboot-kafka/pom.xml

@@ -47,7 +47,7 @@
         <spring-kafka.version>2.8.8</spring-kafka.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <oracle-jdbc.version>21.6.0.0.1</oracle-jdbc.version>
-        <avro.version>1.11.0</avro.version>
+        <avro.version>1.11.4</avro.version>
     </properties>
 
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