Update all non-major dependencies to v2.21.1
diff --git a/jgvariant-parent/pom.xml b/jgvariant-parent/pom.xml
index f50bdab..602356e 100644
--- a/jgvariant-parent/pom.xml
+++ b/jgvariant-parent/pom.xml
@@ -69,7 +69,7 @@
     <versions-plugin.version>2.16.0</versions-plugin.version>
 
     <apiguardian.version>1.1.2</apiguardian.version>
-    <errorprone.version>2.21.0</errorprone.version>
+    <errorprone.version>2.21.1</errorprone.version>
     <google-java-format.version>1.15.0</google-java-format.version>
     <inject-resources.version>0.3.3</inject-resources.version>
     <jetbrains-annotations.version>24.0.1</jetbrains-annotations.version>