Bump jackson-databind from 2.12.2 to 2.12.7.1 in /java/showcase

Bumps [jackson-databind](https://github.com/FasterXML/jackson) from 2.12.2 to 2.12.7.1.
- [Release notes](https://github.com/FasterXML/jackson/releases)
- [Commits](https://github.com/FasterXML/jackson/commits)

---
updated-dependencies:
- dependency-name: com.fasterxml.jackson.core:jackson-databind
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/java/showcase/pom.xml b/java/showcase/pom.xml
index 5c2b951..776a30f 100644
--- a/java/showcase/pom.xml
+++ b/java/showcase/pom.xml
@@ -43,7 +43,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.12.2</version>
+            <version>2.12.7.1</version>
         </dependency>
         <dependency>
             <groupId>com.google.protobuf</groupId>