Update `com.fasterxml.jackson:jackson-bom` to version `2.21.1` (#97)

pom.xml

diff --git a/pom.xml b/pom.xml
index c8a1381..6b5d696 100644
--- a/pom.xml
+++ b/pom.xml
@@ -59,7 +59,7 @@
 
     <maven.javadoc.failOnError>false</maven.javadoc.failOnError>
     <classmate.version>1.7.3</classmate.version>
-    <jackson.version>2.21.0</jackson.version>
+    <jackson.version>2.21.1</jackson.version>
     <log4j.version>2.25.3</log4j.version>
     <log4j-audit.version>1.0.1</log4j-audit.version>
     <slf4j.version>1.7.36</slf4j.version>