Fix matrix-auth (Jenkins plugin) version

manifests/jenkins/master.pp

@@ -340,7 +340,7 @@ class tails::jenkins::master (
   }
 
   jenkins::plugin { 'matrix-auth':
-    version       => '2.61',
+    version       => '2.6.1',
     digest_string => '5d7dd5ffd60ff691027cbcc17dda63fc2873de2ea2665300f0aa4b2231602f05',
     digest_type   => 'sha256',
     require       => Jenkins::Plugin[