Revert "Bump jackson-databind from 2.12.1 to 2.12.2 (#565)" (#584)

(cherry picked from commit d9bf686)

Author: streibeb

build.gradle

@@ -22,7 +22,7 @@ repositories {
 dependencies {
     implementation "org.freemarker:freemarker:2.3.31"
     implementation "com.graphql-java:graphql-java:15.0"
-    implementation "com.fasterxml.jackson.core:jackson-databind:2.12.2"
+    implementation "com.fasterxml.jackson.core:jackson-databind:2.12.1"
 
     testImplementation "org.junit.jupiter:junit-jupiter-api:5.7.1"
     testImplementation "org.junit.jupiter:junit-jupiter-params:5.7.1"