Update version to 2.4.1-SNAPSHOT

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=313876815
diff --git a/annotation/pom.xml b/annotation/pom.xml
index 8b04669..7e575c1 100644
--- a/annotation/pom.xml
+++ b/annotation/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>@BugPattern annotation</name>
diff --git a/annotations/pom.xml b/annotations/pom.xml
index 90a950b..3beda7a 100644
--- a/annotations/pom.xml
+++ b/annotations/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>error-prone annotations</name>
diff --git a/check_api/pom.xml b/check_api/pom.xml
index 3c971d1..958efbb 100644
--- a/check_api/pom.xml
+++ b/check_api/pom.xml
@@ -31,7 +31,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>error-prone check api</name>
diff --git a/core/pom.xml b/core/pom.xml
index edddc42..2ea90eb 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -31,7 +31,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>error-prone library</name>
diff --git a/docgen/pom.xml b/docgen/pom.xml
index ccc3e15..41de789 100644
--- a/docgen/pom.xml
+++ b/docgen/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>Documentation tool for generating Error Prone bugpattern documentation</name>
diff --git a/docgen_processor/pom.xml b/docgen_processor/pom.xml
index 2559eae..2ad333e 100644
--- a/docgen_processor/pom.xml
+++ b/docgen_processor/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>JSR-269 annotation processor for @BugPattern annotation</name>
diff --git a/pom.xml b/pom.xml
index f6e2ad3..d807514 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@
   <name>Error Prone parent POM</name>
   <groupId>com.google.errorprone</groupId>
   <artifactId>error_prone_parent</artifactId>
-  <version>2.4.0</version>
+  <version>2.4.1-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <properties>
diff --git a/refaster/pom.xml b/refaster/pom.xml
index 2d57ab9..617c4ef 100644
--- a/refaster/pom.xml
+++ b/refaster/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <artifactId>error_prone_parent</artifactId>
         <groupId>com.google.errorprone</groupId>
-        <version>2.4.0</version>
+        <version>2.4.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/test_helpers/pom.xml b/test_helpers/pom.xml
index 9c58be2..d1317cd 100644
--- a/test_helpers/pom.xml
+++ b/test_helpers/pom.xml
@@ -31,7 +31,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>error-prone test helpers</name>
diff --git a/type_annotations/pom.xml b/type_annotations/pom.xml
index c7e53d3..9a765f6 100644
--- a/type_annotations/pom.xml
+++ b/type_annotations/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.google.errorprone</groupId>
     <artifactId>error_prone_parent</artifactId>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
   </parent>
 
   <name>error-prone type annotations</name>