Update dependency com.uber.nullaway:nullaway to v0.12.1
diff --git a/jgvariant-parent/pom.xml b/jgvariant-parent/pom.xml
index 61b180f..448943c 100644
--- a/jgvariant-parent/pom.xml
+++ b/jgvariant-parent/pom.xml
@@ -78,7 +78,7 @@
     <jqwik.version>1.9.1</jqwik.version>
     <jspecify.version>1.0.0</jspecify.version>
     <junit-jupiter.version>5.11.3</junit-jupiter.version>
-    <nullaway.version>0.12.0</nullaway.version>
+    <nullaway.version>0.12.1</nullaway.version>
     <parsson.version>1.1.7</parsson.version>
     <picocli.version>4.7.6</picocli.version>
     <yasson.version>3.0.4</yasson.version>