Update all non-major dependencies to v2.21.0
diff --git a/jgvariant-parent/pom.xml b/jgvariant-parent/pom.xml
index f527a11..e0e4bac 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>2.20.0</errorprone.version>
+ <errorprone.version>2.21.0</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>