Bump org.apache.avro:avro from 1.8.2 to 1.12.0 in /spark/core

Bumps org.apache.avro:avro from 1.8.2 to 1.12.0.

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

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

spark/core/build.gradle

@@ -67,7 +67,7 @@ sparkVariants {
 
             if (variant.scalaMajorVersion == '2.10') {
                 add(variant.configuration('implementation'), "org.apache.spark:spark-unsafe_${variant.scalaMajorVersion}:${variant.sparkVersion}")
-                add(variant.configuration('implementation'), "org.apache.avro:avro:1.8.2")
+                add(variant.configuration('implementation'), "org.apache.avro:avro:1.12.0")
                 add(variant.configuration('implementation'), "log4j:log4j:1.2.17")
                 add(variant.configuration('implementation'), "com.google.code.findbugs:jsr305:3.0.2")
                 add(variant.configuration('implementation'), "org.json4s:json4s-ast_2.10:3.6.12")