Bump io.confluent:kafka-schema-registry-parent from 7.3.1 to 7.3.3

Bumps [io.confluent:kafka-schema-registry-parent](https://github.com/confluentinc/schema-registry) from 7.3.1 to 7.3.3.
- [Release notes](https://github.com/confluentinc/schema-registry/releases)
- [Commits](confluentinc/schema-registry@v7.3.1...v7.3.3)

---
updated-dependencies:
- dependency-name: io.confluent:kafka-schema-registry-parent
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle.kts

@@ -18,7 +18,7 @@ repositories {
 
 // Dependencies versions
 val kotlinVersion = "1.8.10"
-val confluentVersion = "7.3.1"
+val confluentVersion = "7.3.3"
 dependencies {
     implementation(gradleApi())
     implementation(kotlin("stdlib", kotlinVersion))