Bump version

Author: apalmblad

HISTORY

@@ -1,3 +1,7 @@
+[2021/12/01]
+* Version 2.5.1
+  - fixes for compiling for Ruby 3
+
 [2015/10/06]
 * Version 2.5.0
   - fixes for compiling for rubinius, at long last

ruby-shadow.gemspec

@@ -19,6 +19,6 @@ Gem::Specification.new do |spec|
   spec.name                  = 'ruby-shadow'
   spec.required_ruby_version = ['>= 1.8']
   spec.summary               = '*nix Shadow Password Module'
-  spec.version               = '2.5.0'
+  spec.version               = '2.5.1'
   spec.license  = "Public Domain License"
 end